Axis 25221r3 User Manual

The 9-pin I/O terminal connector provides the interface to four digital outputs, four digital 

photo-coupled inputs and GND.

The input ports are on pins 1-4. They are used for connecting external alarm devices to 

trigger alarm recordings. The input is typically connected to a motion detector or any other 

external security device. When you specify an input port as an alarm trigger, this number 

corresponds to the camera number. When AXIS 262 detects ON (input pin is connected to 

GND pin), recording is started and is stopped when OFF (input pin is left floating or 

connected to +5V DC or higher) is detected. Maximum 5V DC is allowed on the input 

The output ports are on pins 5-8. They can drive a maximum load of 24V DC at 100mA 

directly or heavier loads by connecting additional relay circuitry. If the output is used with 

an external relay, a diode must be connected in parallel with the load, for protection 

against any voltage transients.