SL50 Sound Level Transmitter
Model: SL50
The POLWAX SL50 sound level transmitter monitors noise levels in real time in industrial, environmental and commercial settings. A precision electret condenser microphone covers 30–120 dB over 20 Hz–20 kHz, with 4–20 mA, 0–10 V or RS485 Modbus RTU output for integration with monitoring and control systems.
- Measuring range 30–120 dB, resolution 0.1 dB
- Precision electret condenser microphone
- 4–20 mA, 0–10 V or RS485 Modbus RTU output
- Wall or pole mounting
- IP65 industrial ABS housing
| Parameter | Value |
|---|---|
| Measurement range | 30 dB to 120 dB |
| Accuracy | ±1.5 dB |
| Resolution | 0.1 dB |
| Response time | ≤30 seconds |
| Frequency range | 20 Hz – 20 kHz |
| Microphone type | Precision electret condenser microphone |
| Output options | 4-20 mA, 0-10 V, RS485 (Modbus RTU) |
| Communication protocol | Modbus RTU |
| Power supply | 12 V – 24 V DC |
| Mounting options | Wall mount, pole mount |
| Housing material | Industrial-grade ABS |
| Protection rating | IP65 (water-resistant and dustproof) |
| Operating temperature | -10 °C to 60 °C |
| Storage temperature | -20 °C to 80 °C |
| Humidity range | 0–95 % RH (non-condensing) |
| Order code group | Code | Option | Example order code |
|---|---|---|---|
| Output | 00 | 0-10 V | – |
| Output | 01 | RS485 | – |
| Output | 02 | 4 - 20 mA | – |
| Range | 101 | 30 - 120 dB | – |
| – | – | – | SL50 -01-101 |
Factories & worker safety
Airports
Traffic & smart-city noise monitoring
Hospitals
Educational institutions
Scope of supply
On request.
Pump & motor condition monitoring
Interact with the simulation – change the conditions and see how the SL50 responds.
Related products
All transmitters
Live demoRHT50 WM Temperature & Humidity Transmitter
Wall-mount temperature and humidity transmitter with two analogue outputs and RS485 Modbus RTU.
View product
Live demoClimaTRANS RHT100 Temperature & Humidity Transmitter
Industrial temperature and humidity transmitter with TFT display, RS485 Modbus RTU and wall or duct mounting.
View product
Live demoRHT DM Duct-Mount Temperature & Humidity Transmitter
Duct-mount temperature and humidity transmitters with stainless-steel probe in 150, 300 or 400 mm length.
View product
Live demoRHT210 / RHT211 Transmitter with External Sensor
Temperature and humidity transmitter with external stainless-steel probe and filter, with or without display.
View productNeed help choosing an instrument?
Describe your application – our measurement team recommends the right product.