The ChannelPlus H37XL is a three-channel time-switch allowing up to 3 on/off settings per day, with each day of the week having a different programme, if desired.

For day-to-day operation, the H37XL has a manual 1 or 2-hour boost button, as well as an advance button to bring forward the next programmed operation for each channel. The backlit display, automatic clock and menu-driven programming are all features designed to make ChannelPlus H37XL as simple to use as possible.



  • Timed control of heating and hot water

    ChannelPlus H37XL is ideal for use in heating systems where two central heating zones and a hot water heater need time control.

    Timed control of security lighting

    Its 3-ampere contacts and simple interface make ChannelPlus H37XL the ideal companion for a security lighting system where timed control of up to three channels of illumination is needed.

  • Key Feature

    • 3-channel, 7-day programme
      • Ideal for controlling hot water and up to two heating zones
    • Large, easy to follow display shows clear programme information
      • Interactive display responds to each press of a button, showing the action taken
    • Programmable holiday setting can be set in advance of departure, for any period
      • No need to come home to a cold house
      • Holiday departure and return dates can be pre-programmed
    • 1 or 2-hour boost and advance
      • Boost at the touch of a button
      • Advance control allows early switch on or off, without affecting any programmed settings
    • Mains-powered, with battery back up
      • Reserve battery maintains the programme settings during power outages
    • Specification
    • Customer testimonials
    • Electrical

      Contact rating

      3 (1) A, 230 V AC

      Contact type

      Voltage-free NOT supported (use H37VXL if required)


      230 V, 50 Hz


      Pollution Degree

      Degree 2

      Class A software

      Type 1 Control



      Enclosure protection


      Double Insulated


      Operating temperature range

      0 °C to +40 °C


      Case material

      Flame-retardant thermoplastic


      101 mm x 163 mm x 37 mm


      Back-lit liquid crystal


      9-pin wall fixing plate

      Programming features


      24-hour or 12-hour AM/PM

      Displayed time adjustments

      1-minute steps

      Switched time adjustments

      10-minute steps

      Programme options

      All Day

      Operating periods per day



      1 or 2-hour boost
      1 or 2-hour extension to ON period
      Instant advance

    • Trevor McClelland on – 18th September 2014

      Excellent programmer and working a treat, very easy to install and a great price for a three zone unit.

      Ian on 9th December 2015

      Easy to use and install. Great features, simple but very effective programming and functions”