ESM-3723 Temperature and RH Controller 230 VAC

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Panel mount temperature & relative humidity controller with sensor probe on 3 metres of cable. It can be configured as a PID controller or ON-OFF controller. 230 VAC powered. Includes ProNem Mini PMI-P sensor

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The Emko Electronik ESM-3723 is a digital controller for relative humidity and temperature. Its 2 relay outputs can be configured independently as control or alarm, either for temperature or relative humidity. Includes the temperature sensor and humidity sensors a ProNem Mini PMI-P.

The temperature, humidity and status of relays are shown on the LED Display.

Each relay output has configurable set point, hysteresis and action. Relays can trigger above or below setpoints, within or outside temperature ranges. On and off times are configurable.

Relay outputs can drive fans, compressors, pumps, heaters etc. to control the temperature and humidity.

Applications include fruit storage and air conditioning.


  • Temperature Sensor Input ProNem Mini PMI-P (other options NTC, PTC, PT-100)
  • Auto-Tune PID
  • Humidity Sensor Input ProNem Mini PMI-P (other options 0/2..10V, 0/4..20mA sensors)
  • 4 Digits Temperature and 4 Digit Humidity Display
  • Heating Control Output, Heating Alarm Output
  • Humidity Control Output, Humidity Alarm Output
  • PID or ON/OFF selectable temperature control
  • Set Value Boundaries
  • IP Rating: IP65(Front)
  • Manufacturer : Emko Elektronik
  • Part No: ESM-3723.
  • Power supply: 230 VAC (± 15 %)
  • Power consumption: 1.5 VA
  • Temperature range: -20 to 80degC
  • Temperature accuracy: ±1%
  • Reading frequency: 3 readings per second
  • OUTPUT1 relay: SPDT, 5A 250 VAC (Heating Output) 
  • OUTPUT2 relay: SPST, 3A / 250 VAC (Temperature Alarm, Humidty Alarm and Humidty Output) 
  • Operating temperature: 0 to 50 °C 
  • Storage temperature: -40 to 85 °C 
  • Operating relative humidity: 20 to 85 % non condensing 
  • Ingress protection (Front): IP65
  • Ingress protection (Rear): IP20
  • Suitable wiring: Up to 4.0 mm²
  • Panel cut-out: 70 x 29 mm
  • Weight: 100 g
  • Dimension: 76mm x 34,5mm x 71mm 

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

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By placing an order with Ocean Controls, you agree to be bound by our Terms and Conditions of Trade.

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