Knight F10C Multi Roller Shutter Switch Contact Switch Sensor Normally Open 1M
HEAVY DUTY ALUMINIUM ROLLER SHUTTER. When Roller shutter door is closed, the circuit is closed. (simply select the approprate wire on the unit which corresponds to the correct resistor. Alarm value resistors: 1K, 2K2, 4K7, 6K8 and 8K2. ).