SR503 central air conditioner thermostat digital room thermostat

SR503 central air conditioner thermostat digital room thermostat

SR503 LCD proportional integral thermostat is used in central air-conditioning, heating and cooling systems. Thermostat deals with the temperature sensed by the sensor and the parameters set by customer, and controls proportional integral driver to achieve the opening of the proportional integral regulator valve to achieve constant temperature

control method: 

1. Proportional control: When the room temperature exceeds the set temperature 0 ~ 5 ℃ (cooling mode) or below the set temperature 0 ~ 5 ℃ (heating mode), the output current or voltage corresponding to the control signal based on the ratio of the temperature difference, when the temperature difference more than 5 ℃, the maximum output control signal.

2. Three bit floating point: When the room temperature exceeds the set temperature 1 ℃ (cooling mode) or below the set temperature 1 ℃ (heating mode), the valve closes the relay, the valve is closed by intermittent operation. In all other state, all relays will not act, valves maintain the status.

Main function:

1.Temperature setting

2.Key lock (optional)

3.Heating-cool

4.Sleep function

5.Clock setting (optional)

6.Off timer

7.On timer

Technical Parameters:

Power supply voltage: AC220V ± 10%, 50 / 60HZ

Since power consumption: <1.5W

Load Current: 1A

Constant power output: less than 200W

Temperature range: 10 ℃ ~ 30 ℃

Temperature Accuracy: ± 1 ℃

Dimensions: 86mmx86mmx13mm

Other LCD types: 

1. factory price, because we are direct producer of ball valve, butterfly valves, check/non-return valves, gate valves and so on.

2.Market, technical support and after-sale service within 24 hours.

3. You can order your own configuration.

Company advantages:

1. We are factory:  We have strict quality control system and amounts of testing equipments for different kind of valve, such as size, pressure, working environment etc. also can provide the competitive price.  

2. Certification: API, CE, ISO,GOST, TS ..etc

3. Low MOQ:  Our factory owns the casting company by itself. We are always ready for providing the sample and producing some small orders, in order to meet the business well.

4. OEM Accepted: We can make the products with the client's demand standard or the customer requirement.

5. Complete Service: We are always ready to hear from you, reply within 12 hours.

6. Quick Delivery: We always keep the large stock for some hot products.

1.What's payment terms?   30% payment in advance, 70% balanced before delivery.  (if total value is USD$ 500, we suggest 100% payment in advanve.)

2.What's MOQ?    100 PCS.    (if Sample, we can check if free sample in stock, freight need to be paid by customer.)

3.Delivery time?

10-30 days after received the advance payment.  (if stock, about 10 days)