Feature: 1. High Accuracy Thermal Sensor With Reliable MCU: The detector adopts high accuracy thermal sensor with reliable MCU, which can effectively detect the abnormal temperature change at the fire scene at the early stage of fire. 2. Wide Application: This alarm is suitable for temperature detection alarms in railways, power distribution cabinets, energy storage cabinets, factories, homes, stores, machine rooms, warehouses and other places. 3. Effective Alarm: When the temperature around the detector rises continuously, the temperature sensor parameters change, the detector continuously collects, analyzes and judges the site parameters, and when the temperature of the confirmed site data reaches a predetermined threshold, the red LED of the detector lights up and starts the buzzer alarm. 4. Automatic State Changing: When the ambient temperature of the detector working is restored, the detector will automatically return to normal working state. 5. SMT Chip Processing: SMT chip processing production make this sensor has high sensitivity, stable and reliable, low power consumption, beautiful and durable, easy to use and other characteristics. Specification: Item Type: Temperature Detection Alarm Material: ABS Battery: 9V 6F22 Battery x 1 ( Without Battery ) Basic Parameters: Volume Level: ≥ 80dB Output Form: Sound And Light Alarm. Package List: 1 x Alarm2 x Expansion Screw2 x Screw Note: The product is not suitable for use in the following places:1. Places where the ambient temperature in the surrounding area is greater than 55 degrees or more.2. Places where the relative humidity is greater than 95%.