2-wire DC powered Conventional Manual Call Point Push Button The conventional manual call point designed for conventional fire alarm system for reporting fire or emergency condition by its button latches. The call point has one 300 ohm resistor is used on the PCB board between Zone+ and Zone- or one relay contact (NO, COM, NC ) output when the button is pressed. Specifications: Operating Voltage Range: 9�32VDC Volts Nominal Operating Resistance: 300Ω Relay Contact Ratings: 2A/30VDC Operating Humidity Range: 95% RH, Non-condensing Operating Temperature Range: -10C to 50C (14F to 122F) Dimensions: W89mm ,H93mm, D26mm Base Dimensions: W87mm ,H87mm, D31.5mm Weight: Net Weight 125g (with base) Colour/Case Material: Red/ ABS