Humidity & Temperature Transmitters

The IMS20-B has no built-in display — it transmits measurement data via electrical output only (RS-485, 4–20 mA, or 0–10 V). The IMS20-D adds a 2.7" e-ink display that shows current humidity and temperature readings directly on the device. Both...

Choose RS-485 (Modbus RTU) if you need to connect multiple devices in a network or integrate with a SCADA or PLC system. Choose 4–20 mA if your controller uses current-loop inputs and you need noise-resistant signal transmission over long cable run...

Yes. Connect the device to a PC via the USB Type-C service port (standard USB-A to USB-C cable) and use akYtec ToolPro software to configure network address, baud rate, measurement filters, alarm thresholds, and LED behaviour.

The RS-485 interface supports bus lengths up to 1200 m. Place 120 Ω termination resistors at both ends of the bus. The maximum number of devices per segment depends on the transceiver unit load — with standard 1 UL transceivers, up to 32 devices p...

Humidity value (%RH): holding register 4097 (hex: 0x1001), 2 registers, FLOAT32. Temperature value (°C): holding register 4099 (hex: 0x1003), 2 registers, FLOAT32. Device status: register 4096 (hex: 0x1000). The default network address is 16 and the...

No. The IMS20-B is rated IP20 and is designed for indoor use only, in closed, explosion-safe premises free of direct moisture and corrosive vapors. It must not be used outdoors.

The sensor uses a capacitive polymer sorbent element. Its dielectric permittivity changes with the amount of absorbed moisture, which is converted into a calibrated relative humidity reading. Temperature is measured by a resistive sensing element who...