ขาย เครื่องตรวจจับอุณหภูมิความร้อนแบตเตอรี่ 9V เซนเซอร์อุณหภูมิความร้อน ราคาที่ดีที่สุด

standalone heat detector battery temperature sensor 9V Temperature Sense without battery DESCRIPTION: Stand-Alone Heat Detector is applicable for a wide range of residential and commercial places like: home, shopping mall, hotel, warehouse, office, school, electric room etc. This detector is battery-operated, featured with high sensitivity, high stability, low power consumption, unique design, novel style, and very user friendly. SPECIFICATION： Power Supply： 9V battery(Not included) Sound Volume;： ≥80dB Operating Temperature： -10℃～+50℃ Operating Humidity： ≤95%RH (40℃±2℃) Alarm Temperature: 57℃(for heat detector) Smoke sensitivity:0.15-0.3dB/m(for smoke detector) Compliance Standard：GB4716-2005 FUNCTION： Self-Test: Press the test button, the LED indicator will light continuously, and give alarm sound at the same time (Note: The self-test function is only to test the detector’s internal operation ). Normal Working: Detector’s indicator will flash once every 6 seconds. It automatically detects temperature changes in the surrounding environment. When the temperature rises up to 57℃, the detector will alarm sound and light blinking. When the temperature of the surrounding environment falls below 57℃, the detector will automatically return to the normal working status. TROUBLESHOOTING ◎ If the detector buzzer gives "di di di" sound during working status, it indicates that the battery is depleted and must be replaced. ◎ Avoid false alarm: Don't install it in the high temperature environment. Don’t install it in the place that with direct sunlight. MAINTENANCE ◎The heat detector requires yearly battery replacement and periodic cleaning to remove dust, dirt, and debris. ◎ If there is any faults, please contact with the supplier. Do not attempt to remove or repair the detector personally. ◎ If the detector is not in use for a long time, pls remove out the battery from the cabinet and put it in a cool and dry place for storage.