12-0-12 Stepdown Transformer 3A SIM908 GSM-GPRS-GPS Modem black wire is used for

black wire is used for ground (GND) or negative () connections

The instrument incorporates a precision frequency synthesizer with low phase noise characteristics

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Comprehensive Documentation: We provide wiring diagrams

12-0-12 Stepdown Transformer 3A SIM908 GSM-GPRS-GPS Modem black wire is used for12 0 12 Stepdown Transformer 3A 12 0 12 Stepdown Transformer 3A 12 0 12 3Amp Center Tapped Step Down Transformer is a general purpose chassis mounting mains transformer. Transformer has 230V primary winding and center tapped secondary winding. The transformer has flying colored insulated connecting leads ( Approx 100 mm long ). The Transformer act as step down transformer reducing AC 230V to AC 12V. The Transformer gives outputs of 12V, 12V and 0V.