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STI 9105 – Medium Thermostat Protector With Key Lock

£18.00 (inc VAT: £21.60)

In Stock

SKU: STI9105 Category: Brand:


The STI9105 thermostat protector with lock is ideal for medium sized thermostats and similar devices measuring no more than 140 x 120 x 75 mm (the approximate internal space within the cover).

Thermostat Protectors help prevent vandalism, damage and tampering of thermostats and energy sensors. Moulded in clear, heavy-duty polycarbonate material, these protective covers are recommended for areas where misuse and vandalism to thermostats and energy sensors may result in an irritating and expensive problem. Holes in the frame allow air to circulate freely for proper operation of the thermostat, but an interior wall prevents any tampering to the controls with a small object. The covers are aesthetically appealing and easy to install. Suitable for flush or surface mounted applications.

The cover is easy to install for flush mounted applications (comes with mounting kit) and lets the thermostat operate normally by allowing air to circulate freely around the thermostat through holes in the casing frame.

A 3 year manufacturer guarantee against damage during normal use is also provided with this product.

**Comes complete with 2 metal keys**

How It Works

Thermostat Protectors retrofit over the existing device and provide protection from unwanted use. For added protection against abuse, they come complete with a lock and key assembly, and are supplied with a full fixing kit.


  • Offers excellent protection against tampering, abuse and accidental damage without affecting operation of the thermostat or energy sensor.
  • Holes in the frame allow air to circulate freely.
  • Inner wall prevents tampering with dials and levers.
  • Easy and quick installation.
  • Cover is molded of clear polycarbonate.
  • Also available is smoke (see STI-9105-S).
  • Two spacers, in clear, available for surface mounted applications.
  • All thermostat covers have a key lock assembly.
  • Includes two (2) keys.
  • Three year guarantee against breakage of polycarbonate in normal use.
  • Cover is UV-stabilized. Molded of clear, 1/8″ thick, heavy-duty polycarbonate.
  • Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C).
  • Smaller cover (STI-9100) and larger cover (STI-9110) available.


Additional information

Weight 0.2 kg