The SJ-HLW485 infrared temperature sensor is a non-contact temperature measurement device. It calculates the surface temperature of an object by receiving the infrared radiation energy emitted by the object and converting it into an electrical signal.
1、 Product Introduction
This sensor is an integrated infrared temperature detector. The optical system and electronic circuit are integrated together in a metal casing. The protective cover is easy to install and has a 90 ° adjustable bracket; To meet various field conditions for installation and continuous measurement.
The sensor is composed of a thermopile and a thermistor inside. All objects constantly emit infrared radiation energy into the surrounding space. By measuring the infrared energy emitted by themselves, their surface temperature can be accurately determined. This is the principle of non-contact infrared temperature measurement.

2、 Technical parameters
Measurement range: -40 ℃ -125 ℃
Measurement accuracy: ± 1% or ± 1 ℃
Perspective: D: S=11:1
Display resolution: 0.01 ℃
Response time: 1 second
Working band: 8-14um
Output mode: RS485
Communication protocol: ModBus RTU
Working conditions: -40-85 ℃; 0—100% RH
Power supply voltage: DC12-24V
Power consumption:<5W
3、 Application scenarios
1. Industrial automation:Monitor the temperature of motors, bearings, boilers, and pipelines to prevent overheating faults; Monitor high-temperature melt in metallurgy and glass manufacturing.
2. Power system:The inspection of the substation uses infrared thermal imaging to identify potential hazards such as loose joints and overload.
3. Consumer Electronics and Home Appliances:Smartphone (temperature measurement under the screen), air conditioner (sensing human body temperature to adjust wind direction), robotic vacuum cleaner (obstacle avoidance and temperature measurement).
4. Architecture and Security:Detecting insulation layer detachment and water leakage points on building walls; Forest fire monitoring.