YANJEN 2 or 4 Wire Network Conventional Smoke Detector 2 -Wire : 10.8-33Vdc;4- Wire: 12-24Vdc / 48Vdc; Tem. Range:-30 鈥?80潞C; Remote Indicator / Relay Output; UL 268 ,EN54-7,BSI Certificated; Best Fire Detection Technology and Quality; Series 152L detector incorporates well proven sensing technologies, together with advances in materials and electronics technology, and represents the pinnacle of fire detector performance and reliability. Series 152L detector has an extra areola to improve detector identification in an alarm condition, so polished and advanced design allow an alarm to be observed from all angles. The detector will work with most modern fire alarm control panels, and meets the requirements of UL 268 and EN 54-7. Product Specifications: ModelYJ-152L-2 Network Type2 Wire SensorPhotoelectronic PowerPower supply non-polar input锛欴C 10~30V CurrentStatic Current :120uA, Alarm Current: 20mA@DC24V Alarm OutputRemote LED Indicator Working EnvironmentOperation Temperature-10鈩冿綖+55鈩? Operation Humidity: