Ecolink WST-600 - Firefigher Smoke/CO Audio sensor - DSC Compatible

• Compatible with DSC 433MHz wireless • Detects Temporal 3 patterns of UL Listed Smoke detectors • Detects Temporal 4 patterns of UL Listed CO detectors • 2 unique serial numbers for independent reporting • 3-1/8” diameter x 1.0” tall • 4 year battery life with 1 CR123A battery • FCC and IC approved