Rotary Encoder, Power Regulator manufacturer / supplier in China, offering Reliable Temperature, Humidity, and CO2 Detection Sensors for Indoor Use, 80mm Diameter 20mmhollow Shaft Encoder 5V Work Voltage 600PPR Push-Pull Output AA-, Bb- Signal 2m Cable, Professional CO2 Temperature Humidity Sensor CO2 Temperature Humidity Transmitter Factory Direct Sell and so on.