The Rate of rise heat detector, HS-WS19L, is designed to sense the rapid of abnormal rise in temparatureof air. If ambient temperature rises rapidly, the air in chamber expends and preses the diaphram to close the contact point to give advanced warning. When a slower temparature change occurs, the expanded air escapes through a bleeding hole to keep the pressure balanced so what the fault alarm never occurs.

Product Specification:

Model HS-WS19L * Rated Voltage DC-24 V * Working Voltage DC-18V ~ DC-30V * Current at Normal Condition 0m A * Current Alarm Condition Max. 100 mA * Testing Ambient Temp - 10' C~ 50' C * Weight 158g * Colour White * Operating Mode Always Open Type * Contact Point Pure Silver * Body ( Plastic) PC-ABS