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AM Temp & Humid Sensor
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AM Temp & Humid Sensor

The 7Semi Industrial RS485 Temperature and Humidity Sensor Probe is an industrial-grade sensing device designed for precise, long-term monitoring in demanding environments. Built on the Modbus RTU protocol over RS485, it delivers highly accurate temperature readings from -40 deg C to +80 deg C and relative humidity readings from 0% to 100% RH, making it a reliable choice for HVAC systems, building automation, cleanrooms, cold-chain monitoring, and industrial process control. The probe is encased in a durable plastic housing with a breathable, dust-proof sintered metal filter that protects the sensing element while maintaining accurate atmospheric contact.

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Key Features

  • RS485 Modbus RTU Output:Uses the industry-standard Modbus RTU protocol over RS485 for reliable, long-distance communication up to several hundred metres.
  • DIP Switch Configuration:Onboard DIP switch for setting the Modbus device ID and baud rate directly on the hardware, no laptop or software required.
  • Wide Supply Voltage:Accepts 9V to 36V DC input, suitable for industrial panel supplies, 12V systems, and 24V DC bus networks.
  • Temperature Measurement Range:Covers -40 deg C to +80 deg C for use in sub-zero cold storage as well as high-temperature industrial enclosures.
  • Humidity Measurement Range:Full 0% to 100% RH coverage for environments ranging from arid to fully saturated air.
  • Configurable Baud Rates:Default baud rate of 9600 bps; user-selectable options of 19200, 38400, and 115200 bps via DIP switch.
  • 4-Wire Connection:Simple wiring with VCC, GND, RS485 A+, and RS485 B- connections for fast, error-resistant installation.
  • Plastic Probe with Sintered Filter:150 mm probe in a 15.7 mm diameter plastic body with a dust-proof, breathable sintered metal cap protecting the sensor element.
  • 2-Metre Cable:Pre-fitted 2-metre cable provides adequate reach for panel-mounted or wall-mounted installations without immediate extension requirements.
  • Onboard Signal Processing:Integrated microcontroller handles data acquisition and Modbus formatting, delivering clean, conditioned output.

 

Technical Specifications

Product Specifications

Brand 7Semi
Temperature Range -40°C to +125°C
Humidity Range 0% to 100% RH
Output Interface RS485 (Modbus RTU)
Supply Voltage 9V to 36V DC
Default Baud Rate 9600 bps
Configurable Baud Rates 19200, 38400, 115200 bps
Probe Length 150 mm
Probe Diameter 15.7 mm
Cable Length 2 metres
Weight 100 g
Housing Material Plastic
Protection Breathable, Dust-Proof Sintered Metal Filter
Address Configuration DIP Switch (Modbus ID and Baud Rate)
Wiring 4-Wire (VCC, GND, RS485 A+, RS485 B-)
Compatible Systems SCADA, PLC, HMI Systems, Arduino, MCU
  • RS485 Modbus RTU Output:Uses the industry-standard Modbus RTU protocol over RS485 for reliable, long-distance communication up to several hundred metres.
  • DIP Switch Configuration:Onboard DIP switch for setting the Modbus device ID and baud rate directly on the hardware, no laptop or software required.
  • Wide Supply Voltage:Accepts 9V to 36V DC input, suitable for industrial panel supplies, 12V systems, and 24V DC bus networks.
  • Temperature Measurement Range:Covers -40 deg C to +80 deg C for use in sub-zero cold storage as well as high-temperature industrial enclosures.
  • Humidity Measurement Range:Full 0% to 100% RH coverage for environments ranging from arid to fully saturated air.
  • Configurable Baud Rates:Default baud rate of 9600 bps; user-selectable options of 19200, 38400, and 115200 bps via DIP switch.
  • 4-Wire Connection:Simple wiring with VCC, GND, RS485 A+, and RS485 B- connections for fast, error-resistant installation.
  • Plastic Probe with Sintered Filter:150 mm probe in a 15.7 mm diameter plastic body with a dust-proof, breathable sintered metal cap protecting the sensor element.
  • 2-Metre Cable:Pre-fitted 2-metre cable provides adequate reach for panel-mounted or wall-mounted installations without immediate extension requirements.
  • Onboard Signal Processing:Integrated microcontroller handles data acquisition and Modbus formatting, delivering clean, conditioned output.

 

Product Specifications

Brand 7Semi
Temperature Range -40°C to +125°C
Humidity Range 0% to 100% RH
Output Interface RS485 (Modbus RTU)
Supply Voltage 9V to 36V DC
Default Baud Rate 9600 bps
Configurable Baud Rates 19200, 38400, 115200 bps
Probe Length 150 mm
Probe Diameter 15.7 mm
Cable Length 2 metres
Weight 100 g
Housing Material Plastic
Protection Breathable, Dust-Proof Sintered Metal Filter
Address Configuration DIP Switch (Modbus ID and Baud Rate)
Wiring 4-Wire (VCC, GND, RS485 A+, RS485 B-)
Compatible Systems SCADA, PLC, HMI Systems, Arduino, MCU