Conventional Manual Call Point 1. Operating voltage: DC24V, 16-28V 2. Operating current: 1）Normal current: ≤20uA 2）Alarm current: ≤30mA 3. Output capacity: rated DC30V/0.1A passive output contact signal and contact resistance ≤100mΩ 4. Type of starting parts: reusable 5. Wiring system: two- wire system, non-polarity 6. Operating environment: indoors, temperature – 10℃～+55℃, relative humidity ≤95%RH, without condensation 7. Housing material and color: plastic, red