1.1 Basis of preparation of financial statements
 
 The financial statements are prepared and presented under the
 historical cost convention, on the accrual basis of accounting in
 accordance with the accounting principles generally accepted in India
 and comply with the accounting standards notified in the Companies
 (Accounting Standards) Rules 2006, (as amended) issued by the Central
 Government, in consultation with National Advisory Committee on
 Accounting Standards (''NACAS'') and relevant provisions of Companies
 Act, 1956 (''the Act''), to the extent applicable.
 
 1.2 Use of estimates
 
 The preparation of financial statements in conformity with generally
 accepted accounting principles (''GAAP'') requires management to make
 estimates and assumptions that affect the reported amounts of assets
 and liabilities and the disclosure of contingent liabilities on the
 date of the financial statements. Actual results could differ from
 those estimates.  Any revision to accounting estimates is recognised
 prospectively in current and future periods.
 
 1.3 Fixed assets and depreciation
 
 Fixed assets are stated at cost of acquisition or revalued amounts less
 accumulated depreciation. The cost of fixed assets includes taxes,
 duties, freight and other incidental expenses related to the
 acquisition and installation of the respective assets.
 
 Depreciation is provided on the straight-line method (''SLM''). The
 depreciation rates prescribed in Schedule XIV to the Act are considered
 as the minimum rates. If the management''s estimate of the useful life
 of a fixed asset at the time of acquisition of the asset or of the
 remaining useful life on a subsequent review is shorter than that
 envisaged in the aforesaid Schedule, depreciation is provided at a
 higher rate based on the management''s estimate of useful life /
 remaining life.
 
 Diagnostics equipments are being treated as raw traded items of
 inventory when they are received. However, if these instruments are
 issued from inventory to customers under placement agreement, these are
 treated as capital asset in the period of such issues and are stated at
 cost.
 
 The key fixed asset blocks and related annual depreciation rates, which
 in management''s opinion reflect the estimated useful economic lives of
 the fixed assets, are:
 
 Where depreciable assets are revalued, depreciation is provided on the
 revalued amount and the additional depreciation on accretion to assets
 on revaluation is transferred from revaluation reserve to the profit
 and loss account.
 
 Assets costing less than Rs 5,000 are fully charged to the profit and
 loss account in the year of acquisition.
 
 Items of fixed assets that have been retired from active use and are
 held for disposal are stated at the lower of their net book value and
 estimated net realizable value and are disclosed separately in the
 financial statements. Any expected loss is recognised in the profit and
 loss account through an accelerated depreciation charge.
 
 Capital work-in-progress includes the cost of fixed assets that are not
 ready to use at the balance sheet date and advances paid to acquire
 capital assets before the balance sheet date.
 
 1.4 Intangible assets
 
 Intangible assets comprise goodwill and technical know-how. These
 intangible assets are amortised on straight-line basis based on the
 following useful lives, which in management''s estimate represents the
 period during which economic benefits will be derived from their use:
 
 1.5 Impairment of assets
 
 The Company assesses at each balance sheet date whether there is any
 indication that an asset or a group of assets (cash generating unit)
 may be impaired. If any such indication exists, the Company estimates
 the recoverable amount of the asset or cash generating unit. The
 recoverable amount is the greater of the asset''s net selling price and
 value in use. In assessing value in use, the estimated future cash
 flows are discounted to the present value at the weighted average cost
 of capital. If such recoverable amount of the asset or the recoverable
 amount of the cash-generating unit to which the asset belongs is less
 than its carrying amount, the carrying amount is reduced to its
 recoverable amount. The reduction is treated as an impairment loss and
 is recognized in the profit and loss account. If at the balance sheet
 date there is an indication that a previously assessed impairment loss
 no longer exists, the recoverable amount is reassessed and the asset is
 reflected at the recoverable amount subject to a maximum of depreciable
 historical cost, had no impairment been recognised.
 
 1.6 Investments
 
 Investments that are readily realizable and intended to be held but not
 more than a year are classified as current investments. All other
 investments are classified as long-term investments.
 
 Long-term investments are carried at cost. Provision for diminution is
 made to recognize a decline, other than temporary in value of long-term
 investments and is determined separately for each individual
 investment. Current investments are carried at lower of cost and fair
 value, computed separately in respect of each category of investment.
 
 1.7 Revenue recognition
 
 Revenue from sale of products is recognised on transfer of all
 significant risk and rewards of ownership of the products on to the
 customers, which is generally on dispatch of goods. Sales are stated
 exclusive of sales tax and net of trade and quantity discount.
 
 Revenue from services is recognised as per the terms of the contract
 with the customer using the proportionate completion method.
 
 Income from fixed price construction contracts is recognised by
 reference to the estimated overall profitability of the contract under
 the percentage of completion method. Percentage of completion is
 determined as a proportion of the costs incurred upto the reporting
 date to the total estimated contract costs. Contract revenue earned in
 excess of billing has been reflected as Project Excess Cost under
 Other current assets  and Billing in excess of contract revenue has
 been reflected under Current Liabilities in the balance sheet.
 Provision for expected loss is recognized immediately when it is
 probable that the total estimated contract costs will exceed total
 contract revenue.
 
 Commission income is recognised when proof of shipment is received from
 the supplier.
 
 Dividend income is recognised when the right to receive the dividend is
 established.
 
 Interest income is recognised on the time proportion basis.
 
 Export incentives receivable are accrued for when the right to receive
 the credit is established and there is no significant uncertainty
 regarding the ultimate collection of export proceeds.
 
 1.8 Inventories
 
 Inventories comprise all costs of purchase, conversion and other costs
 incurred in bringing the inventories to their present location and
 condition.
 
 Raw materials are valued at the lower of cost and net realisable value.
 Cost is determined on the basis of the weighted average method.
 
 Work-in-progress and finished goods are valued at the lower of cost and
 net realisable value. Excise duty is included in the value of finished
 goods inventory. Cost is determined on a weighted average basis.
 
 Custom duty on goods where title has passed to the Company is included
 in the value of inventory.
 
 1.8 Inventories (Continued)
 
 The net realisable value of work-in-progress is determined with
 reference to the estimated selling price less estimated cost of
 completion and estimated costs necessary to make the sale of related
 finished goods. Raw materials held for the production of finished goods
 are not written down below cost except in case where material prices
 have declined and it is estimated that the cost of the finished product
 will exceed its net realisable value.
 
 1.9 Other current assets
 
 Project Excess Cost represents revenue recognised on the contract using
 percentage of completion method reduced by progressive billing.
 
 1.10 Leases
 
 Where the Company is the lessee:
 
 Leases where the lessor effectively retains substantially all the risk
 and benefits of ownership of the leased items are classified as
 operating leases. Lease payments under an operating lease, are
 recognised as an expense in the statement of profit and loss on a
 straight line basis over the lease term.
 
 Where the Company is the lessor:
 
 Assets subject to operating leases are included in fixed assets. Lease
 income is recognised in the Profit and Loss Account on a straight-line
 basis over the lease term. Costs, including depreciation are recognised
 as an expense in the Profit and Loss Account. Initial direct costs such
 as legal costs, brokerage costs, etc. are recognised immediately in the
 Profit and Loss Account.
 
 1.11 Employee benefits
 
 (a) Short term employee benefits
 
 All employee benefits payable wholly within twelve months of rendering
 the service are classified as short-term employee benefits. Benefits
 such as salaries, wages and short term compensated absences, etc. and
 the expected cost of ex-gratia is recognised in the period in which the
 employee renders the related service
 
 (b) Post-employment benefits
 
 (i) Defined Contribution Plans: The Company''s approved superannuation
 scheme and employee state insurance scheme are defined contribution
 plans. The Company''s contribution paid / payable under the schemes is
 recognised as expense in the profit and loss account during the period
 in which the employee renders the related service.
 
 (ii) Defined Benefit Plans and other Long Term Benefits: The Company''s
 provident fund, gratuity, pension and medical benefit schemes are
 defined benefit plans. Leave encashment, silver jubilee and star awards
 are other long term benefits. The present value of the obligation under
 such defined benefit plans and other long term benefits are determined
 based on actuarial valuation using the Projected Unit Credit Method,
 which recognises each period of service as giving rise to additional
 unit of employee benefit entitlement and measures each unit separately
 to build up the final obligation.
 
 Actuarial gains and losses are recognised immediately in the Profit and
 loss account.
 
 1.12 Foreign currency transactions
 
 The Company is exposed to currency fluctuations on foreign currency
 transactions. Transactions denominated in foreign currency are recorded
 at the exchange rate prevailing on the date of transactions.
 
 Exchange differences arising on foreign exchange transactions settled
 during the year are recognized in the profit and loss account of the
 year.
 
 Translation
 
 Monetary assets and liabilities in foreign currency, which are
 outstanding as at the year-end, are translated at the year-end at the
 closing exchange rate and the resultant exchange differences are
 recognized in the profit and loss account. Non monetary items are
 stated in the balance sheet using the exchange rate at the date of the
 transaction.
 
 Derivative instruments
 
 The Company''s exposure to foreign currency fluctuations relates to
 foreign currency assets, liabilities and forecasted cash flows. The
 Company limits the effects of foreign exchange rate fluctuations by
 following established risk management policies including the use of
 derivatives. The Company enters into forward exchange contracts, where
 the counterparty is a bank.
 
 As per Accounting Standard (''AS'') 11 - ''The Effects of Changes in
 Foreign Exchange Rates'', the premium or the discount on forward
 exchange contracts not relating to firm commitments or highly probable
 forecast transactions and not intended for trading or speculation
 purpose is amortized as expense or income over the life of the
 contract. All other derivatives,
 
 1.13 Foreign currency transactions (Continued)
 
 which are not covered by AS 11, are measured using the mark-to-market
 principle with the resulting gains / losses thereon being recorded in
 the profit and loss account.
 
 Hedge Accounting
 
 The Company uses foreign currency forward contracts to hedge its risks
 associated with foreign currency fluctuations relating to highly
 probable forecast transactions. With effect from 1 October 2010, the
 Company designates some of the new forward contracts in a cash flow
 hedging relationship by applying the hedge accounting principles.
 
 These forward contracts are stated at fair value at each reporting
 date. Changes in the fair value of these forward contracts that are
 designated and effective as hedges of future cash flows are recognised
 directly in Cash Flow Hedge Reserve under Reserves and Surplus, net of
 applicable deferred income taxes and the ineffective portion is
 recognised immediately in the profit and loss account.
 
 Amounts accumulated in Cash Flow Hedge Reserve are reclassified to
 profit and loss in the same periods during which the forecasted
 transaction affects profit and loss.
 
 Hedge accounting is discontinued when the hedging instrument expires or
 is sold, terminated, or exercised, or no longer qualifies for hedge
 accounting. For forecasted transactions, any cumulative gain or loss on
 the hedging instrument recognised in Hedging Reserve Account is
 retained there until the forecasted transaction occurs.
 
 If the forecasted transaction is no longer expected to occur, the net
 cumulative gain or loss recognised in Cash Flow Hedge Reserve is
 immediately transferred to the profit and loss account for the period.
 
 1.14 Taxation
 
 Income-tax expense comprises current tax (i.e. amount of tax for the
 year determined in accordance with the income-tax law), deferred tax
 charge or credit (reflecting the tax effect of timing differences
 between accounting income and taxable income for the year) computed in
 accordance with the relevant provisions of the Income Tax Act, 1961.
 The deferred tax charge or credit and the corresponding deferred tax
 liabilities or assets are recognised using the tax rates that have been
 enacted or substantively enacted by the balance sheet date. Deferred
 tax assets are recognised only to the extent there is reasonable
 certainty that the asset can be realised in future; however, where
 there is unabsorbed depreciation or carried forward loss under taxation
 laws, all deferred tax assets are recognised only if there is a virtual
 certainty supported by convincing evidence of realisation of the
 assets. Deferred tax assets are reviewed as at each balance sheet date
 and written down or written-up to reflect the amount that is reasonable
 / virtually certain (as the case may be) to be realised.
 
 1.15 Earnings per share
 
 Basic and diluted earnings per share is computed by dividing the net
 profit attributable to equity shareholders for the year, by the
 weighted average number of equity shares outstanding during the year.
 
 1.16 Provision
 
 Provisions are recognized when the Company recognizes it has a present
 obligation as a result of past events, it is probable that an outflow
 of resources embodying economic benefits will be required to settle the
 obligation and a reliable estimate can be made of the amount of the
 obligation. Provisions are not discounted to its present value and are
 determined based on best estimate required to settle the obligation at
 the balance sheet date. These are reviewed at each balance sheet date
 and adjusted to reflect current best estimates.
 
 Disclosures for contingent liability are made when there is a possible
 or present obligation for which it is not probable that there will be
 an outflow of resources. When there is a possible obligation or a
 present obligation in respect of which the likelihood of outflow of
 resources is remote, no disclosure is made.
 
 Loss contingencies arising from claims, litigation, assessment, fines,
 penalties, etc. are recorded when it is probable that a liability has
 been incurred and the amount can be reasonably estimated.
 
 Contingent assets are neither recognized nor disclosed in the financial
 statements.
 
 1.17 Cash and Cash equivalents
 
 Cash and cash equivalents include cash, cheques in hand, cash at bank
 and short term deposits with banks having maturity of three months or
 less.
 
 1.18 Insurance claims
 
 Amounts byway of insurance claims are recognised as assets when it is
 reasonably certain that the claim is receivable and is recorded as a
 reduction in the expense where the corresponding loss has been debited.
 
 2.  Amalgamation
 
 2.1 Amalgamation of Siemens Building Technologies Private Ltd. (SBTPL)
 and Vista Security Technique Private Ltd.  (Vista)
 
 Pursuant to the scheme of amalgamation (''the scheme'') of the erstwhile
 SBTPL and Vista with the Company under sections 391 to 394 of The
 Companies Act sanctioned by the Honorable High Court of Madras on 3
 September 2010, the assets and liabilities of the erstwhile SBTPL and
 Vista were transferred to and vested in the Company with effect from
 October 2010. Accordingly, the scheme has been given effect to in these
 accounts.
 
 The operations of SBTPL include manufacturing, supply, installation,
 testing and commissioning of security system. Vista is engaged in the
 business of trading in electronic goods.
 
 The amalgamation has been accounted for under the pooling of
 interests method as prescribed by AS-14 Accounting for Amalgamations''.
 Accordingly, the accounting treatment has been given as under-
 
 i.  The assets, liabilities, reserves and credit balance in the profit
 and loss account of SBTPL and Vista as at October 2010 have been
 incorporated at their book values in the financial statements of the
 Company.  
 
 ii.  3,734,079 equity shares of Rs 10 each fully paid up of SBTPL and
 investments in such equity shares held by the Company stands cancelled.
 Further 6,694 equity shares ofRs 100 each fully paid up of Vista and
 investment in such equity shares held by SBTPL also stands cancelled.
 
 iii.  The excess amount of Rs 3,638,092 of the book value of the
 investment in the equity share capital of SBTPL and Vista over the face
 value of the cancelled share as referred to in note (ii) above has been
 debited to the General Reserves of the Company.  Consequently, the
 financial statements for the year ended 30 September 2011 include the
 operations of SBTPL and Vista with effect from 1 October 2010.
 
 2.2 Amalgamation of Siemens Healthcare Diagnostics Ltd. (SHDL)
 
 Pursuant to the scheme of amalgamation (''the scheme'') of the erstwhile
 SHDL with the Company under sections 391 to 394 of The Companies Act sanctioned by the Honorable High Courts
of Bombay and Gujarat on 28 
 January 2011 and March 2011 respectively, the assets and liabilities 
 of the erstwhile SHDL were transferred to and vested in the Company with 
 effect from 1 October 2009. Accordingly, the scheme has been given effect 
 to in these accounts.
 
 The operations of SHDL include manufacturing, trading and dealing in
 various healthcare diagnostic products.
 
 The amalgamation has been accounted for under the pooling of
 interests method as prescribed by AS - 14 Accounting for
 Amalgamations''. Accordingly, the accounting treatment has been given as
 under-
 
 i.  The assets, liabilities, reserves and credit balance in the profit
 and loss account of SHDL as at 1 October 2009 have
 been incorporated at their book values in the financial statements of
 the Company.  
 
 ii.  Consequent to this amalgamation, 3,134,700 additional shares have
 been issued to the shareholders of SHDL and the paid up share capital
 of the Company has increased to Rs 680,590 effective 24 March 2011. The
 excess amount of Rs 9,404 of the share capital of SHDL over the face
 value of share capital issued has been credited to the Capital Reserve
 of the Company.
 
 iii.  The accounts of SHDL for the year ended 30 September 2010 were
 finalized as a separate entity. The net profit after tax amounting to Rs
 55,137 of SHDL for the year ended 30 September 2010 has been adjusted
 in the Profit and Loss account of the Company.  Consequently, the
 financial statements for the year ended 30 September 2011 include the
 operations of SHDL.
 
 2.3 Amalgamation of Siemens Rolling Stock Private Ltd. (SRSPL)
 
 Pursuant to the scheme of amalgamation (''the scheme'') of the erstwhile
 Siemens Rolling Stock Private Ltd. with the Company under sections 391
 to 394 of The Companies Act sanctioned by the Honorable High Court of
 Bombay on 27 April 2011, the assets and liabilities of the erstwhile
 SRSPL were transferred to and vested in the Company with effect from 1
 October 2009. Accordingly, the scheme has been given effect to in these
 accounts.
 
 The operations of SRSPL include manufacturing of railway bogies and
 parts thereof.
 
 The amalgamation has been accounted for under the pooling of
 interests method as prescribed by AS - 14 Accounting for
 Amalgamations''. Accordingly, the accounting treatment has been given as
 under-
 
 i.  The assets, liabilities, reserves and debit balance in the profit
 and loss account of SRSPL as at 1 October 2009 have been incorporated
 at their book values in the financial statements of the Company.
  
 ii.  25,000,000 equity shares of Rs 10 each fully paid up of SRSPL and
 investments in such equity shares held by the Company stands cancelled.
 
 iii. The accounts of SRSPL for the year ended 30 September 2010 were
 finalized as a separate entity. The net loss amounting to Rs 141,236 of
 SRSPL for the year ended 30 September 2010 has been adjusted in the
 Profit and Loss account of the Company.
 
 Consequently, the financial statements for the year ended 30 September
 2011 include the operations of SRSPL.
 
 Notes:-
 
 Included in the gross block of land at 30 September 2011 is freehold
 land of Rs 474,446 (2010: Rs 471,814) and buildings includes 172,750
 (2010: Rs 172,750) representing 525 shares of Rs 50 each and 10 shares of
 Rs 100 each (2010: 520 shares of Rs 50 each and 10 shares of Rs 100 each)
 in various co-operative housing societies.
 
 Plant and machinery includes Gross block of Rs 24,962 (2010: Rs 24,962)
 and Net block of Rs 17,372 (2010: Rs 20,092) cost incurred by the company
 on certain assets ownership of which vests with the West Bengal State
 Electricity Board.
 
 vi Diagnostics equipments are given on Lease. Future minimum lease
 payments are Nil (2010: Nil) as the Company has never enforced the
 minimum purchase commitment.