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1.LCD display with blue backlight, 2.Air conditioned thermostat, 3.With remote control, 4.3A, 5.CE - details see: https://www.machineto.com/tkb50-42l-lcd-display-with-backlight-digital-air-conditioned-thermostat-10208149

Introduction
The TKB50...thermostat with LCD acquires the room temperature with its built-in NTC sensor
The heating contact will close when the room temperature falls below the selected setpoint in heating mode
The cooling contact will close when the room temperature exceeds the selected setpoint in cooling mode

Application
In conjunction with fans and valves, TKB50 is designed to control the valve in heating or cooling systems to maintain the desired setpoint temperature in Commercial buildings, Residential buildings, Light industrial buildings

Features
LCD display with backlight

On/off control output for valve actuators
Manual changeover of heating/ cooling
Timing function for thermostat switch-on/ switch-off
Minimum and Maximum setpoint limitation
Symbol for valve indication
Key-lock function for setted parameters protection
Inclined design for better reading-out
fan-valve dependent control or fan-valve independent control mode
With an potential-free output( TKB50.42LK)
Remote control type (TKB50.42LR)

Technical data
Voltage : AC230V( AC110V/ AC24V available)
Load : 3A
Power consumption : 2W
Setting range : 4~45( factory setting: 5~35)
Switching differential : ±0.5K
Ambient temperature : -5~50
Protective housing : IP20
Housing material : anti-flammable PC

Selection table

Model	Current	Application
TKB50.42L	3A	For control of a 3-speed fan & an on/off valve actuator
TKB50.42LK	3A	TKB50.42L with a potential-free output
TKB50.42LR	3A	TKB50.42L with remote control function
TKB50.50L	3A	For control of a 3-speed fan & two on/oil valve actuators

Pls contact with me for more detail information,

waiting for your kindly inquiry!