testo 6621温湿度变送器，精度±2%RH，有挂壁式和管道式，可选信号输出种类，可选自带显示器，带校准与设置接口，2路模拟信号输出

Testo 6631温湿度变送器产品优势:
Transmitter with 2 analog outputs (temperature/humidity)
High-precision Testo humidity sensor with long-term stability
Adjustment without disassembling the transmitter
P2A software for parameterization, adjustment and analysis
Testo 6631温湿度变送器产品描述：
The testo 6621 temperature and humidity transmitter offers you accurate measurement of temperature and humidity values in rooms or in ducts. As a transmitter, it converts the measured parameter into a standardized electrical signal and is therefore able to be used in automated building services.

The testo 6621 temperature and humidity transmitter offers these advantages

2 analog outputs (temperature/humidity), 1 passive humidity and temperature analog output as an option
Patented humidity sensors: The Testo humidity sensor is high-precision and has long-term stability
Adjustment without disassembling the temperature and humidity transmitter
P2A software for parametrization, adjustment and analysis saves time and money during commissioning
Optimum calibration concept through adjustment of the whole signal chain
(1-point, 2-point and analog adjustment)
2-line LC display optional
Product versions: The temperature and humidity transmitter is available in various designs – for measurement in rooms or in ducts
产品包含：

testo 6621 temperature and humidity transmitter as a wall or duct version, with selectable signal outputs, 2-line display (optional), external interface for adjustment and commissioning, along with 2 analog outputs.