Temperature > Thermostats > Sitrad compatible controls

Full Gauge MT-543E Plus - 4 relay temperature control with cycle timer and alarm with remote connectivity, PT100 or NTC input.

Full Gauge MT-543E Plus 4 output digital thermostat with Sitrad remote serial connectivity



  • 4 Relays - Heating and/or cooling plus alarm and cycle timer

  • Remote management with Sitrad software (with Conv32)

  • Dual voltage 115V or 230v

  • NTC: -50/105 Deg C or PT100: -99/300 Deg C

  • Click here to download PDF instructions

Sitrad - Free software for remote management/connectivity from PC, iPhone, iPad and Android devices with addition of Conv32.

app store or download latest version here.


*Prices exclude delivery (Choose quantity at checkout, please call for higher quantity and oem discounts)

  Model Range Inputs Price ex.vat Info
{column0} {column1} {column2} {column3} {column4} {column5}
Select option

Downloadable instructions: pdf

General Description

Full Gauge MT-543E Plus a 4 relay refrigeration control/thermostat with cycle timer, alarm and remote management from PC, iPhone, iPad and Android devices ("Conv32" serial to USB converter required).

The MT-543E Plus has four relays and can be used for cooling or heating. It allows the second relay to be set as alarm (within or outside range), and the third relay as a cycle timer. Besides this it has an internal audible alarm (buzzer).

It has a serial communication for connection to Sitrad remote management software which is available for PC, iPhone, iPad and Android devices. Please see Sitrad dashboard below.

Sitrad remote management software for Full Gauge MT-543 ri Plus

The screenshot below show how the parameters for the chosen control can be viewed and then altered if necessary for a local or remote location.

Sitrad remote management software for Full Gauge MT-543 ri Plus

Measuring range of standard NTC sensor is -50.0/105 Deg.C. If used with a PT100 sensor range is extended to -99.9/300 Deg.C.

For all these features plus data logging please see Full gauge MT-543 ri Log.

Standard 34 x 76mm front panel mounting with IP65 gasket. It's bright display makes for easy reading.

With 0.1 Degrees resolution, adjustable hysterisis from 0.2 Deg. and scale in Deg. C or F, the result is a versatile accurate thermostat.

For 12/24v please see contact us.

Technical Specification

Power supply                                         115V/230V +/- 10%
Mains frequency                                     50-60Hz
Power consumption                                3W
SPST Output Relay:
Resistive contact rating                          5 Amp 250V (per output)
Inductive contact rating                          3 Amp 250V (per output)
Measuring range standard NTC               -50.0/105 Deg.C
Measuring range PT100 sensor                -99.9/300 Deg.C
Operating temperature                           0/50 Deg.C
Measuring precision (Ambient 25 Deg.C)  +/- 1Deg.C typical
Overall dimension                                  34 x 76 x 77 mm
Panel cut out                                        29 x 71 mm
Front panel protection                            IP65


Heating or cooling with remote management
Refrigeration control with remote management
Chiller temperature control with remote management
Greenhouse temperature control with remote management
Cooler control with remote management
Temperature alarm with remote management
Off Cycle defrost control with remote management
Spray booth temperature control with remote management
Poultry house alarm or temperature control with remote management
Leisure - swimming pool, saunas or steam rooms temperature control with remote management