Page 4 AXIS 207/207W/207MW Installation GuideHardware overviewI/O terminal connectorThe 4-pin I/O terminal connector provides the interface to the following:Function AXIS 207 AXIS 207WAXIS 207MW Description PinoutsTransistorOutputPin 4 Pin 4 With a maximum load of 100mA anda maximum voltage of 24V DC, thisoutput has an open-collector NPNtransistor with the emitter con-nected to the GND pin. If used withan external relay, a diode must beconnected in parallel with the load,for protection against voltage tran-sients.The I/O terminal pins arenumbered as shownbelow.Digital Input Pin 3 Pin 3 Connect to GND to activate, or leavefloating (or unconnected) to deacti-vate.GND Pin 2 Pin 1Auxiliary DCPower InputPin 1(5VDCmin 2.5W)Pin 2(5VDCmin 3.5W)Connected electrically in parallelwith the power adapter, this pinprovides an auxiliary connector formains power to the unit. It can alsobe used to power auxiliary equip-ment, max 50mA.Focus ringStatusindicator(outer ring)MicrophoneAntenna(wireless models)NetworkconnectorNetworkindicatorControlbuttonLock ringProduct ID &serial number(S/N) labelWireless indicatorPowerindicatorI/O terminalconnectorPowerconnector(Wireless models only)1414AXIS 207WAXIS 207MWAXIS 207