Herschel iQ MD1 Wired Thermostat Control
Herschel iQ MD1 Wired Thermostat Control Herschel iQ MD1 - side view

Herschel iQ MD1 Wired Thermostat

(2 customer reviews)


Out of stock

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Next Day Delivery
2 yr Warranty
Reduce heating Cost
Energy efficient
Zero Maintenance
Easy Installation


The Herschel iQ MD1 Wired Thermostat is ideal for new builds / renovations where cabling can be neatly hidden whether it be for domestic or commercial applications. When used in conjunction with the iQ HUB, MD1 can also be controlled via the internet using the Herschel iQ App enabling you to control the heaters when you are away from the building.

MD1 is wired directly to the mains circuit and to the heaters and requires recessing into the wall. If this is not practical consider the Herschel iQ T1 Wireless Thermostat.

The MD1 thermostat will operate your Herschel heater(s) by turning them on if the room temperature is lower than the desired temperature and turning them off once the desired temperature is reached. The MD1 is easy to operate, featuring a large digital touchscreen display and incorporates the latest EcoDesign energy-saving features including Herschel’s open window technology.

MD1 has a keypad locking feature to prevent unauthorised tampering making it suitable for commercial applications such as hotels, care homes, student accommodation and let properties.  The MD1 is a 16 amp thermostat enabling up to 3.6 kW of Herschel heaters to be connected.

Functions include:

  • 7 x 1 day programmable, 6 periods per day;
  • “Comfort” and Economy modes;
  • Window Open Function (shutting off the heating if a rapid drop in temperature is detected until you override this or wait 1 hour);
  • Time of Day;
  • Target Temperature control (up to 45°C, making it suitable for specialist high temperature applications such as hot yoga studios);
  • Keypad lock.

Other Features:

  • 16 Amp peak load at 230 volts;
  • Radio Frequency 433Mhz;
  • 200m wireless range (if unobstructed);
  • 24 month warranty*;
  • Herschel Infrared heaters together with the iQ MD1 are fully compliant with EC Directive 2009/125/EC for Ecodesign of local space heaters.

Note: Herschel iQ controls will only work with Herschel heaters.   *Attempted use with any other heater brand will invalidate the warranty. 

Click here to download the Installation and setup instructions.

Technical Specifications

Frequency 433 MHz
Power Supply 110 – 230VAC, 50/60Hz
Set Point Range 5~45℃
Ambient 0~50℃
Relative Humidity 85%
Backlight White
Sensor NTC 10K, 3950ohms at 25℃
Accuracy ± 0.5℃ (step control by +0.5℃)
Protection Class IP30 (no zone in bathrooms)
Housing ABS to UL94-5 fire retardant plastic

Quality & Safety

iQ Certifications

Herschel Heaters and iQ Controls comply with ErP Regulation (EU) 2015/1188 and Supplement (EU) 2016/2282 (Lot 20).

Control Options (Required)

  • Herschel iQ Hub, internet enablement for Herschel iQ controllers
    Herschel iQ Hub

2 reviews for Herschel iQ MD1 Wired Thermostat

  1. E Miller

    Easy to install and use, flexible enough for our needs.

  2. Margaret Wilson

    Use this with my Herschel heaters and it gives simple temperature control. Easy for my electrician to install and easy for me to operate.