Heat Detector with UL, EN and CE approvals

heat detector,heat alarm,temperature detector 1) Easy installation and maintenance 2) Polished low-profile housing design 3) Durable sensor head, no need for replacement 4) SMD circuit board design: satisfactory quality and reliability guaranteed 5) N/C (normal / close) and N/O (normal / open) relay output ways for option 6) AR (auto reset) function for security systems (optional for 4-wire models) 7)Base included Response Temperature: 57°C (135°F) Ceiling Spacing: 50 foot rating for heat sensor Reset Voltage: less than 1 volt Alarm Indicator: LED continuously emitting red light Remote Output: 25 mA max., diode gate Temperature Range: -10°C to 50°C Permissible Current: 80mA maximum Humidity: 0 to 95% RH, no condensation or icing Alarm Contact: (for 4-wire) NO or NC Operation, Form A: 1.0A@30VDC/0.5A@125VAC Dimensions: 100mm (dia) x 46mm (ht) with base Weight: 120g/set with base