Product Details

R303 Series Programmable Electric Heater Thermostat

R303 Series Heating Thermostat is with stylish design, and take use of advanced technology of single-chip microcomputer. By comparing different temperature between ambient room temperature and set point, thermostat controls relays of heating equipments switching on or switching off to make the room constantly and energy-savingly.

A programmer allows you to set ‘On’ and ‘Off’ time periods( 5 Weekdays, Saturday and Sunday, 6 Time Zone) to suit your own lifestyle, which is most economic and energy-saving.

R303 GA is typically used in Water Heating System, controlling NC or NO Valves or dry contacts.

R303 GB is typically used in Electric Heating system with Dual Temperature Controls( Room Temperature and Floor Temperature). The pre-set floor temperature is to protect heating equipments from over-heat damage, to keep the whole heating system safety, reliable and energy-saving.

Features

Big LCD Display, Blue (Defaulted)/White/Green Backlight

Advanced Technology, Good Anti-interference

5 Working Mode:Automatic Mode, Comfort Mode, Energy SavingMode and Frost Protection Mode

Programmable, 5 Weekdays+2 Weekends 6 Time Zones On/offSettings( 7 days 24 Hours Setting is customized)

Frost Protection, etc.

Buttons Lock for Child Proof

Easy wiring and installation, and can be installed inEuropean and Chinese mounting boxes.

Basic Specification

Power Supply:	AC100V~AC240V, 50/60 Hz
Current Load:	R301GA AC 220V 3A Water Heating R301GB AC220V 16A Electric Heating
Ambient Temp. Range:	0~99.5℃
Setpoint Range:	5~35℃
Floor Setpoint:	20~90℃
Accuracy/Tolerance :	+/-1℃
TimingTolerance :	<1%
Thermistor:	NTC10Ω@25 ℃
Storage Conditions Temp:	-10~60 ℃
Humidity:	<90% r.h.

Part No	Consumption Rating		Internal/Room Sensor	External/ Floor Sensor	System
Part No	Max. 3A	Max. 16A	Internal/Room Sensor	External/ Floor Sensor	System
R303GA	√		√		Water Heating System
R303GB		√	√		Electric Heating System
R303GBF		√	√	√	Electric Heating System