Wi-Fi thermostat COMPUTHERM E400RF

The COMPUTHERM E400RF Wi-Fi thermostat is a wireless switching device with touch buttons that can be controlled via the internet from a smartphone or tablet and is recommended primarily for controlling heating and cooling systems. The thermostat allows remote control of your heating system wherever you are. It is easily connected to any gas boiler with a two-wire room thermostat connection point, as well as to any air conditioner or other electrical device, regardless of whether they have a 24 V or 230 V control circuit.

The COMPUTHERM E400RF Wi-Fi thermostat can be used:

• to control gas and pellet boilers;
• for remote control of an existing heating/cooling system;
• to control electric boilers;
• to control solar systems;
• to control certain groups of other electrical devices.

The COMPUTHERM E400RF Wi-Fi thermostat consists of two units. One is the thermostat (transmitter), the other is the receiver, which controls the boiler. There is a wireless (radio frequency) connection between the two units, so no wired line needs to be installed, which is particularly useful when modernising old buildings.

It is important to know that the thermostat module requires a constant power supply (USB-C 5 V DC, 1 A) due to continuous Wi-Fi communication. The adapter and cable are included in the package.

By using the product, the heating of your apartment, house or holiday home can be controlled at any time and from anywhere.

The thermostat is ideal if:

• you do not use your apartment or house according to a predetermined schedule,
• you leave home for an indefinite period during the heating season;
• or you want to use your holiday home during the heating season as well.

Key features:

• Wireless control with touch button;
• User interface: touch buttons, phone app;
• Remote control option;
• It is freely portable within range;
• Manual and programmed modes;
• Temperature sensor calibration;
• Smartphone app;
• Control by multiple users;
• And more.

With the E400RF weekly programmer you can set the desired temperature for every hour of the day and night. This way the temperature in your home always meets your requirements. It provides comfort without wasting energy unnecessarily. It always consumes only as much energy as is needed, and you can save up to 30% of your heating costs. In addition, remote control can also save you energy, as you can remotely switch off the device from your smartphone or tablet when you are away and switch it on later.

Technical data

Technical data of the thermostat (transmitter):

• Temperature measuring range: 0 °C – 50 °C (in 0.1 °C steps);
• Adjustable temperature range: 5 °C – 99 °C (in 0.5 °C steps);
• Temperature measuring accuracy: ±0.5 °C;
• Switching sensitivity: ±0.1 °C to ±1.0 °C (in 0.1 °C steps);
• Temperature calibration range: ±3 °C (0.1 °C steps);
• Temperature sensor type: NTC 3950 10 kΩ at 25 °C;
• Power supply: USB-C 5 V DC;
• Operating frequency: 433 MHz, Wi-Fi (b/g/n) 2.4 GHz;
• Range: approx. 250 m in open terrain.

Technical data of the receiver unit:

• Supply voltage: 230 V AC, 50 Hz;
• Switchable voltage: max. 24 V DC / 250 V AC;
• Switchable current: 10 A (3 A inductive load).