Apollo Discovery Waterproof Manual Call Point has a highly visible alarm indicator which can be seen from up to 10 metres away. The manual call point interrupts the polling cycle for a fast response, when activated. A combined LED indicator and front reset mechanism allows for a simple reset. The Waterproof Addressable Manual Call Point is loop powered and operates at 17 to 28VDC for all variants. The address of each manual call point is set at the commissioning stage by means of a seven-segment DIL switch. A red alarm LED is provided on the manual call point. This LED is controlled independently of the manual call point, by the fire control panel. Once activated, the manual call point can be reset by inserting the reset key into the front facing LED, turning clockwise until a positive click and reset occurs. The isolated version of the manual call point incorporates a short circuit isolator which will ensure its operation in the event of a short circuit fault on the loop. Isolator operation is indicated by a yellow LED. The component parts of the manual call point are moulded in a robust fire retardant polycarbonate.