Honeywell T4 7 Day Wired Programmable Room Thermostat T4H110A1021

The T4, T4M and T4R thermostats are designed to provide automatic time and temperature control of heating systems in homes and apartments. The T4 it’s compatible with 24-230 V on/off appliances such as gas boilers, combi-boilers and heat pump. Also works with zone valve applications but not with electric heating (240 V).

The T4 and T4M are for wired on the wall installations and the T4R for wireless installations. T4R exist of a thermostat and a Receiver box.

- Minimalistic and modern design makes it easy to blend in any type of homes
- Table stand or wall mounted thermostat options to fit new and replacement installations
- Backlight for easier viewing in all light conditions
- Factory programmed daily, weekly or 5+2 default heating schedule
- Schedule options with 4 or 6 independent set-points to suit comfort needs
- Set-point temperature always displayed
- OFF position has an integral frost protection setting at minimum 5 °C so that pipes in the house will never freeze
- Alert messages to assist in fault finding
- Timed override function allows to hold a targeted setpoint for 1 or 2 hours
- Away mode allows to reduce the temperature for a period of 1 to 99 days
- Automatic time clock adjustment for “Daylight Saving Time

Honeywell T4 7 Day Wired Programmable Room Thermostat T4H110A1021 Specification :

- Room temperature display range : From 0 °C to 50 °C
- Temperature Setting range: Program: 5 to 35 °C OFF: 5 °C
- Control form: Fuzzy Logic
- Time display: 24 hour or 12 hour AM/PM format
- Time keeping accuracy: +/-10 mins per year
- Program: 5+2, weekly or daily schedule with 4 or 6 daily time and temperature level changes
- Time setting resolution: Program - 15 minute steps
- Sensing element: 10k (@25 °C) NTC thermistor
- Power: Powered by 2 x AA batteries
- Wiring: T4 (wired) and T4M (Opentherm) terminal block capable of accepting wired up to 1.5 mm2