STN705 24V single stage programmable room thermostat with LCD

Air Conditioner Thermostats HVAC Thermostat Electric and Gas Thermostat Programmable Thermostat

24V 1 Heat/1 Cool LCD Programmable AC Room Air Conditioner Thermostat With HVAC System

Name: 24V 1 Heat/1 Cool LCD Programmable AC Room Air Conditioner Thermostat With HVAC System
Brand: Smart Therm

STN705 is the wired 5/1/1 programmable single stage thermostat in the STN700 platform, controlling 1 heat and 1 cool. It uses an NTC sensor with a display accuracy of +/-1 C at 20 C, and runs from 2 x AAA alkaline batteries or 24VAC hardwired power. The certification set covers RoHS, CE, CCC and ISO, which is a wider spread than most single stage stats in this class.

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Key Benefits

RoHS, CE, CCC and ISO documentation covers European and Chinese markets from one SKU
5/1/1 programme separates weekdays, Saturday and Sunday
NTC sensing with +/-1 C accuracy at 20 C
Battery or 24V power, so retrofits do not depend on a common wire
Suitable for air conditioning, radiator, ventilation, cooling and heat pump duties

Problems It Solves

Separate part numbers for CE and CCC markets
Weekend occupancy handled badly by a simple weekday programme
Retrofits blocked by the lack of a common wire
Unclear sensing accuracy on low cost stats

Who It Is For

Exporters shipping into both Europe and China
Hotel and apartment developers
HVAC distributors stocking a programmable single stage stat
OEM buyers needing wide certification coverage

Technical Features

24V single stage control, 1 heat and 1 cool
5/1/1 programmable schedule
Temperature range 32 F to 99 F (1 C to 40 C), setpoint range 44 F to 90 F (7 C to 32 C)
Display accuracy +/-1 C at 20 C, NTC sensor
Power supply 2 x AAA 1.5V alkaline batteries or 24VAC (18 to 30VAC), 50/60 Hz hardwired
ABS housing in white with LCD display
RoHS, CE, CCC and ISO documentation
1 year warranty with online technical support

Specifications

Model	STN705
Programmability	5/1/1 Programmable
Power Supply	Battery or 24V
Switchable Voltage	DC 2 x AAA 1.5V Alkaline batteries 24VAC (18~30VAC), 50/60 Hz for hardwire (common wire)
Temperature Range	32℉ to 99℉ (1℃ to 40℃)
Setpoint Range	44℉ to 90℉ (7℃ to 32℃)
Display accuracy	±1°C (at 20°C)
Sensor	NTC
Backlight	LCD
Color	White
Material	ABS
Dimension	120 x 98 x 28 mm
Application	Hotel
Type	Air Conditioning/Heating/HVAC Systems/Radiator/Ventilation/Cooling/Noise and Attenuation/Heat pump
Function	Ventilaion Shape Square
Feature	Energy Saving
Certification	RoHS CE CCC ISO
Warranty	1 Year
After-sale Service	Online technical support

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

Application Scenarios

Hotel rooms on single stage air conditioning
Apartments with combined heating and cooling
Ventilation and radiator systems needing a scheduled control
Export orders covering both CE and CCC markets

Quality Control

Programme timing verified against a reference clock
Heat and cool outputs exercised on the line
Documentation file maintained for RoHS, CE, CCC and ISO

Customisation Options

Default schedule preset for the buyer's building type
Housing marking and front label
Graphic design support for manuals and packaging
Setpoint range restricted for hotel projects

Comparison

How It Compares

STN705W WiFi version

STN705 is the wired version, which suits sites where a connected product is not wanted or the network is unreliable.

STN605

STN705 is fixed to the 5/1/1 pattern, while STN605 also offers 7 day and non-programmable modes.

Use guide

Installing And Commissioning

Step 1

Isolate the 24V control circuit before starting

Step 2

Land the conductors on the colour coded terminals

Step 3

Fit 2 x AAA batteries, or hardwire at 24VAC where a common wire exists

Step 4

Enter the weekday, Saturday and Sunday periods

Step 5

Run a heat call and a cool call and confirm the plant responds

Answers