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This is an economical online infrared temperature sensor launched by WAhome. It adopts 8-14μm infrared spectrum, with a standard measuring range of 0-500℃ and optical resolution of 30:1. It is suitable for non-contact temperature measurement scenarios such as industrial automation and equipment monitoring. It features IP65 protection, 24VDC power supply, 4-20mA/0-5V signal output, and easy installation.
- Model Segment Definition
| Segment | Meaning |
| IS | WAhome infrared temperature sensor series code, stands for Industrial online Sensor |
| 500 | Upper limit of standard measuring range: 0-500℃ (customizable ranges: -20~200℃, 0~600℃, 0~800℃, etc.) |
| A | Basic configuration code, represents standard 4-20mA 2-wire output; distinguished from V (0-5V) and RTU (RS485) versions |
| IS-500A | Full model: Industrial online infrared temperature sensor, 0-500℃ range, standard 4-20mA output |
- Core Specification Parameters
| Parameter Category | Detailed Specifications |
| Basic Features | Non-contact infrared temperature measurement / Integrated design / IP65 protection / Stainless steel housing / Optional 2-wire / 3-wire system |
| Temperature Measurement Parameters | • Measuring Range: Standard 0-500℃ (customizable: -20~200℃, 0~600℃, 0~800℃) |
| • Spectral Range: 8-14μm (suitable for most non-transparent materials) | |
| • Optical Resolution: 30:1 (customizable 4:1, 15:1, 25:1) | |
| • Accuracy: ±1% reading or ±1℃ (whichever is larger, ambient temperature 23±5℃) | |
| • Resolution: 0.1℃ | |
| • Response Time: 300mS (95% response; customizable 10mS/50mS fast response version) | |
| • Emissivity: Fixed 0.95 (customizable adjustable emissivity version) | |
| Electrical Parameters | • Power Supply: 24VDC (optional 2-wire/3-wire; customizable 3.3V/12V) |
| • Working Current: ＜50mA | |
| • Output: Standard 4-20mA (optional 0-5V voltage output) | |
| • Load Resistance: ≤500Ω (under 4-20mA output) | |
| Mechanical Parameters | • Housing: 304 stainless steel |
| • Dimensions: Probe diameter 18mm, length 63mm | |
| • Mounting: M12 thread (thread length 10mm) | |
| • Cable: Standard 2m (customizable 3m/6m) | |
| • Weight: Approx. 400g (with 2m cable) | |
| Environmental Parameters | • Operating Temperature: 0-60℃ (customizable high/low temperature resistant version) |
| • Storage Temperature: -40~85℃ | |
| • Humidity: 10~95%RH (non-condensing) | |
| • Protection Grade: IP65 (probe part) | |
| • Anti-interference: Normal operation under strong magnetic and microwave environment | |
| Safety Certification | CE certified, compliant with industrial EMC standards |
- Accessory List & Package Contents
Standard Package: 1×IS-500A infrared temperature sensor probe, 2m standard cable, installation manual, product certificate
Optional Accessories:
Extension cable (3m/6m)
Mounting bracket / fixing clamp
Display meter / signal converter
Adjustable emissivity version (customized)
Fast response module (10mS/50mS)
- Competitor & Cross-Brand Replacement List
| Brand | Model | Main Parameters | Compatibility |
| WAhome Upgraded Version | IS-500V / IS-500RTU | Same range, 0-5V output / RS485 output | Fully compatible, direct replacement for different control systems |
| Omron | E52-CA15A | 0-500℃ / 15:1 / 4-20mA / IP65 | Functionally equivalent, higher price with brand premium |
| Keyence | GT2-H12K | 0-500℃ / 12:1 / Digital output / IP67 | Higher accuracy & faster response, expensive |
| Raytek | MARATHON MM | 0-500℃ / 30:1 / 4-20mA / IP65 | International brand, similar performance, about double the price |
| Domestic Alternative | IRT-M500A (Dongben Measurement & Control) | 0-500℃ / 20:1 / 4-20mA / IP65 | Similar function & price, suitable for industrial applications |
- Selection Guidelines & Alternative Solutions
5.1 Core Selection Criteria
✅ Range Matching: Confirm target temperature within 0-500℃; customize other ranges if exceeded
✅ Distance Coefficient: Select proper optical resolution (D:S) according to measuring distance and target size
Short distance & small target: 30:1 or higher
Long distance & large target: 15:1 or 25:1 optional
✅ Output Signal: Match PLC/DCS input type (4-20mA / 0-5V / RS485)
✅ Response Time: 10mS/50mS for fast changing targets; 300mS for static targets
✅ Environmental Conditions: Select high-temperature resistant version for harsh heat environment; confirm IP65 for humid occasions
5.2 Alternative Solution Recommendation
| Application Scenario | Recommended Model | Reason |
| Standard Industrial Temperature Measurement | IS-500A (Basic Version) | High cost performance, suitable for most industrial scenarios |
| Voltage Output Required | IS-500V | 0-5V output, compatible with voltage acquisition modules |
| Digital Communication Required | IS-500RTU | RS485 Modbus, easy for network monitoring |
| Fast Response Requirement | IS-500A (Custom 10mS/50mS) | Suitable for high-speed moving / rapid temperature rising targets |
| Low Temperature Measurement | IS-DT500A (-20~200℃) | Optimized for low temperature with higher accuracy |
| High Temperature Measurement | IS-500A (Custom 0~800℃) | Extended range for metallurgy, forging and other high-temperature industries |
- Selection Mnemonic
WAhome IS-500A Selection Mnemonic
Choose IS-500A for infrared temperature detection
Full coverage from zero to five hundred centigrade
30:1 distance ratio, 0.1℃ precise resolution displayed
300ms quick response, 4-20mA signal provided
24V power 2-wire design, IP65 protection reliable and steady
304 stainless steel with M12 thread mounting ready
Pick V/R for different output, fast response available by custom order
- Main Application Scenarios
- Industrial Automation: Production line equipment temperature monitoring, motor/bearing temperature measurement, heating furnace temperature control
- Power Industry: Busbar/connector temperature measurement in distribution cabinet, transformer winding monitoring, cable joint overheating early warning
- Electronic Manufacturing: PCB soldering temperature control, semiconductor packaging temperature measurement, battery thermal management
- Plastic & Rubber: Injection molding machine barrel temperature monitoring, extruder heating control, mold temperature measurement
- Food Processing: Baking equipment monitoring, sterilization process temperature recording, cold chain temperature tracking
- Medical Equipment: Heating component monitoring of medical instruments, laboratory constant temperature equipment calibration
- Full IS-500 Series Model List
| Model | Range | Output Signal | Special Function | Application Scenario |
| IS-500A | 0-500℃ | 4-20mA (2-wire) | Standard type | General industrial temperature measurement |
| IS-500V | 0-500℃ | 0-5V (3-wire) | Voltage output | Voltage acquisition system matching |
| IS-500RTU | 0-500℃ | RS485 Modbus | Digital communication | Remote monitoring & networking |
| IS-DT500A | -20~200℃ | 4-20mA | Low temperature optimization | Cold chain & low-temperature equipment |
| IS-500A-F | 0-500℃ | 4-20mA | 10mS/50mS fast response | High-speed moving target |
| IS-HT500A | 0-500℃ | 4-20mA | High-temperature resistant probe (150℃) | High ambient temperature installation |
| IS-ISO500AW | 0-500℃ | 4-20mA / WiFi | Wireless transmission | Hard-wiring inconvenient occasions |
