Good Quality Cheap 4-Wire Smoke Detector with sound and relay output PY-YT142C

Good Quality Cheap 4-Wire Smoke Detector with sound and relay output PY-YT142C                                            Introduction: PY-YT142C is designed to provide open area protection and to be used with most security alarm control panel. Two LEDs on each detector provide local 360° visible alarm indication. every six seconds showing that power is applied and the detector is working properly.   Special Features: Work perfectly with all conventional intelligent fire control panels Built-in advanced MCU Expert Algorithm Software. Easy installation and maintenance Durable sensor head, no need for replacement SMD circuit board design-satisfactory quality and reliability guaranteed   Key Specifications/  Operating Voltage Range: 9 to 28 VDC Volts Non-polarized
Standby Current: ≤200μA
Maximum Alarm Current (LED on): ≤45mA
Alarm Relay Contact Ratings: 2A@ 24V DC
Operating Humidity Range: ≤95%RH(40°C±2°C) Relative Humidity, Non-condensing
Operating Temperature Range: -10°C to 50°C (14°F to 122°F)
Smoke Alarm Sensitivity: 1.06±.26%FT
Temperature Alarm Sensitivity: 57°C (135°F) A1R (only for with heat sensor)
Height: 48 mm installed in Base
Diameter: 99 mm