Arduino R205 Series User manual
R205 Series Wireless heating Thermostat
R205 LCD Heating Thermostat AC819 Transceiver
1.General
R205 is a Radio Controlled Room Thermostat which requires no wiring and can be fitted in any normal operating
enviroment within a typical 30 meter range of the TR205 RF Transceiver. It is available for Non-programmable and
Programmable.
AC819 Transceiver should be mounted on a vertical flat surface near the boiler or centrial heating wiring centre.
Do not place it too close to objects which might interfere with the radio signal. It is preferable to mount the
transceiver such that an imaginary straight line between it and the transmitter thermostat is not obscured by the
boiler or any other large metal objects.
2. Model
R205GA: 5A R205GB: 16A
3.Technical data
2-1. Work Voltage: 3V±0.2V（DC）
2-2. Consumption: <1.5W 2-3. Load Current: <16A
2-4.Accuracy:±0.5ºC 2-5. Set-point Range: 5.0ºC - 30.0ºC
2-6. Timing Error: <1% 2-7. Rated Power: <200W
2-8. Dimension: 136mm x 90mm x 30mm
2-9. Power Supply for Transceiver: 220VAC±10%,50/60 HZ Note: we won’t provide batteries.
4. Sizes
Thermostat Size: 136mm x 90mm x 30mm Transceiver Size:86mm x 90mm x 20mm
4. Wiring
R205 Series Wireless heating Thermostat
5. Installation Instruction
5-1. Use a small size screwdriver (approx. 3.5 mm
width) insert to the notch of LCD Display unit about 4
mm.
5-2.Turn up the screwdriver with a little pressure,
and open the LCD unit
5-3. Please use two screws (provided) to fasten
the back cover of LCD Display unit on wall or box.
5-4.Put two AA Batteries into the the side hole and
close the cover.
5-5. The cover of LCD Display unit is connected on
the wall or box at the angle of 30º.
5-6. Turn up the screwdriver with a little pressure,
and open the LCD unit
6. Keys and Function Instruction
R205 Series Wireless heating Thermostat
7. Symbols
Power：Power on/off.
: Manual mode setting :Programmable mode setting
: Time adjusting. The order is Min – Hour – Week P: Function. Press P into week programmable
: Confirm Menu Setting and Menu Save. ▲▼: Temperature setting and mode adjusting.
8. Menu & Setting
1. Temp.Setting 2. ManualSetting
▲: Temperataure up Press into manual mode.
▼: Temperataure down
2. Programmable setting
Press into programmable mode.
3. Confirm
Press to confirm Menu Setting and Menu Save.
4. Time adjusting
Press to adjust minutes, hour and week circuitly. Press ▲, value up; press ▼, value down.
5. Programmable(optional)：
Press P into week programmable. Adjusting order: Monday ~ Friday first time zone time adjusting ＞Monday ~
Friday first time zone setpoint adjusting ＞…＞Saturday and Sunday sixth or fourth time zone time adjusting ＞
Saturday and Sunday sixth or fourth time zone setpoint adjusting. After setting every parameter, press P
changeover into next one. It will flash to show the needed setting. Press ▲▼ to adjust. ( The time will increase or
reduce by every 15 mins.)
Mon. to Fri. Sat. & Sun
Time Temp. set Time Temp. set
8:00 Get up 28 ºC 8:00 Get up 28 ºC
12:00 Work 15 ºC 12:00 Work 13 ºC
14:00 Duty off 27 ºC 14:00 Duty off 29 ºC
18:00 Rest 14 ºC 18:00 Rest 12 ºC
R205 Series Wireless heating Thermostat
9. Senior setting
During power off, press and hold P for 3 sec. into Serior option setting. It includes temperature correction,
Weekend setting, IP High address and Low address of 485 communication. Then press P changeover into the
relative item. At last, confirm it and turn on automatically.
Code Option ▲or ▼
1 Temperature compensation in internal sensor -9 to +9℃.
2 Path selection 0-3
3 485 Communication IP high address (optional) 01--FF
4 485 Communication IP low address (optional) 01--99
10. Warranty
We offer the warranty of 12 months, from the sales day. If it is not the quality problems, or beyond the warranty
period, we will charge for the after-sale service.
