ST-300 is both a SD Simple Digital and a PD Programmable Digital smart thermostat, directly controlled using five tactile easy push buttons along the bottom front face.

Defaulting to a weekly programming mode, to select SD Simple Digital mode, in programming mode simply select option to disable, making this easier for users who have no need of timed on and off sequences. Slimline styling at only 14mm back to front depth. The large LCD display face offers an easy to read screen.

A mains powered low energy thermostat, using less than 1 Watt of power to operate, costing less than conventional thermostats to operate. An energy saving mode is built in, which gives end users a manual or auto set back function, automatically reducing set temperature to a pre selected level at a selected time, ideal for holiday or vacant occupancy.

A programmable thermostat, that can also be set to be a simple digital thermostat, designed to offer weekly planned cycles with 5 working days and 2 weekend choices (5+2 or 5+1+1), and each of these days can be set to up 6 cycles of on and off. It has a highly accurate internal temperature sensor, able to be adjusted in 0.5°C increments, the high quality sensor reflecting human sensitivity to temperature changes.

• Capable of supporting an external sensor.
• Utilises a locking function to prevent misuse.
• A feature rich design, including open window detection capability, a temporary manual override button to take it out of current programme.
• Designed to be used as a room or zone thermostat.