TCW122B-CM Remote IO Module

Easy Setup Remote IO Modules TCW122B-CM

An Ethernet network-compatible remote IO module for environmental monitoring and control, the TCW122B-CM The Web interface, SNMP software, and user applications can all be used to manage it.
Two relays with ordinarily open and normally closed contacts are present in the remote IO module. Both relays have the ability to be remotely activated via the WEB interface, SNMP managers, and HTTP/XML API commands, as well as locally, based on the state of the monitored parameters.

The TCW122B-CM features 1-Wire interface support, allowing for the connection of up to two temperature or humidity-temperature sensors. In addition to monitoring ambient conditions, it can also track two analog voltages and the status of two digital inputs. It's capable of sending email notifications and/or SNMP traps for any alarm situation related to these parameters. This controller is versatile and can function both independently and as an integral component within data acquisition (SCADA) systems.


  • Intelligent monitoring and management of temperature and humidity.
  • Web-based configuration and control with password protection.
  • Utilizes a 1-Wire interface, supporting up to 2 temperature sensors.
  • Equipped with 2 analog inputs, ranging from 0 to 60VDC.
  • Features 2 digital inputs, which can be set to 'dry contact' or 'logic level' modes.
  • Includes 2 relay outputs with both Normally Open (NO) and Normally Closed (NC) contacts.
  • Capable of sending email alerts for specific conditions.
  • Supports SMTP with authentication (please note that SSL/TLS is not supported).
  • Offers SNMP version 1 (SNMPv.1) for network management.
  • Sends SNMP traps to notify about alert conditions.
  • Provides HTTP and XML API commands for seamless integration.
  • Supports remote firmware updates


  1. Remote monitoring and control of environmental conditions in data centers.
  2. Regulating temperature and humidity levels for food and pharmaceutical storage.
  3. Managing electrical devices remotely.
  4. Security and alarm systems for homes and offices.
  5. Automation of industrial processes.
  6. Control and administration of small to medium-sized networks.

Supported sensors

1-Wire temperature sensor TST100
1-Wire temperature sensor TST103
1-Wire humidity and temperature sensor TSH202
1-Wire humidity and temperature sensor TSH206

Technical properties:

  • Physical characteristics
  • Dimensions: 109 x 82 x 32 mm
  • Weight: 110 g
  • Environmental limits
  • Operating тemperature range: -20 to 55°C
  • Storage temperature range: -25 to 60°C
  • Operating relative humidity range: 5 to 85% (non-condensing)
  • Warranty
  • Warranty period: 3 years
  • Power supply
  • Operating voltage range (including -15/+20% according to IEC 62368-1): 10 to 14 VDC
  • Current consumption (with both relays ON): 0.2 A @ 12 VDC
  • Ethernet connectivity
  • 10 Mbit/s transfer rate
  • Half-duplex mode only
  • Auto-negotiation not supported
  • Digital inputs
  • Isolation: Non-isolated
  • Mode: Dry contact or Logic level
  • Maximum input voltage: +5.5VDC
  • Minimum input voltage for high logic level: +2.5VDC
  • Maximum input voltage for low logic level: +0.8VDC
  • Sampling rate: 10ms
  • Digital filtering time interval: 30ms
  • Analog inputs
  • Isolation: Non-isolated
  • Type: Single-ended
  • Resolution: 10 bits
  • Mode: Voltage
  • Input Range: 0 to 60 VDC
  • Accuracy: ±1%
  • Sampling Rate: 37.6ms per channel (averaged value of 64 samples)
  • Input Impedance: 1 mega-ohm (min.)
  • Relay outputs
  • Type: Form C (N.O. and N.C. contacts)
  • Contact current rating: 3 A @ 24 VDC/30 VAC (resistive load)
  • Initial insulation resistance: 100 mega-ohms (min.) @ 500 VDC
  • Mechanical endurance: 10 000 000 operations
  • Electrical endurance: 100 000 operations @ 3 A resistive load
  • Contact resistance: 50 milli-ohm max. (initial value)
  • Minimum pulse output: 1 Hz at rated load
  • CAUTION: The device does not contain any internal overcurrent protection facilities
    on the relays’ contact lines.
  • External fuses or short circuit current limiting circuit breakers, rated to 3 Amps, are to
    be used for overcurrent protection of the connecting lines.
  • 1-Wire interface
  • Output voltage (+VW): 5.3 ± 0.2 VDC
  • Maximum output current (+VW): 0.2 A
  • Internal FLASH memory
  • Endurance: 100 000 cycles (Every relay status and settings change is a memory cycle.)