ST2403 230V non-programmable room thermostat with large push button

Wired Thermostat 230V Wired Thermostat Air Conditioner Thermostats Gas Boiler Thermostat Non-Programmable Thermostat

230V Non-Programmable LCD Display High Temperature Controller HEAT/OFF/COOL Room Thermostat

Name: 230V Non-Programmable LCD Display High Temperature Controller HEAT/OFF/COOL Room Thermostat
Brand: Smart Therm

ST2403 is a wired 230V non-programmable room thermostat with a large push button and a HEAT / OFF / COOL mode switch, rated for air conditioning, heating, HVAC, radiators, ventilation and boilers. Its distinguishing feature is a button battery backup that saves the settings through a power failure, so the unit returns to the same configuration when the supply comes back.

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Key Benefits

Button battery backup keeps settings through a power failure
Large push button suits users who struggle with small keys
Rated across air conditioning, heating, HVAC, radiator, ventilation and boiler duties
Four backlight colours: white, blue, green or orange
Low battery indicator before control is affected

Problems It Solves

Settings lost at every power cut
Separate products for radiator, ventilation and air conditioning duties
Small keypads that are hard to operate
Batteries failing without warning

Who It Is For

Facility teams in areas with unstable supply
HVAC distributors covering mixed duties
Contractors standardising one manual control
OEM buyers needing a settings backup feature

Technical Features

Wired 230V non-programmable control
HEAT / OFF / COOL mode switch with a large push button
Button battery backup to save settings during power failure
Room temperature calibration adjustment
Low battery indicator
Large clear LCD, wall mounted
Backlight white, blue, green or orange
ABS and PC housing, 400 g, one instruction sheet per box

Specifications

Model	ST2403
Backlight	White/Blue/Green/
Material	ABS+
Weight	400g
Type	Air Conditioning / Heating / HVAC Systems / Radiator / Ventilation /
Package Included	1Wired Thermostat 1Instruction

Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.

Application Scenarios

Buildings with frequent supply interruptions
Mixed plant estates needing one manual control
Radiator and ventilation systems on 230V
Air conditioning with a heating stage

Quality Control

Settings retention tested through a simulated power interruption
Push button action checked on every unit
High voltage insulation test on the 230V section

Customisation Options

Backlight white, blue, green or orange
Front label, logo and housing marking
Setpoint range narrowed for managed property
Manual and carton in the buyer's language

Comparison

How It Compares

ST2301

ST2403 adds a button battery backup and a large push button, and covers a wider list of duties.

ST2403RF wireless version

ST2403 is the wired unit, for installations where a cable to the appliance already exists.

Use guide

Installing And Commissioning

Step 1

Isolate the 230V supply and confirm the circuit is dead

Step 2

Mount at about 1.5 m clear of the heat emitter and supply air

Step 3

Land the switched conductor on the marked terminal

Step 4

Set the mode switch and enter the target temperature

Step 5

Interrupt the supply briefly and confirm the settings are retained

Answers