Teledyne Flir Humidity and Temperature Probe For Extech RH520 Paperless Chart Recorders Extech RH522B Clocks you're immediately set up to

you're immediately set up to track temperature

User Input (Reference Pressure) Barometric Pressure 0

maximum wind gusts

1 "AA" Alkaline batteries (not included)

The two instruments are mounted on a real wood case

Teledyne Flir Humidity and Temperature Probe For Extech RH520 Paperless Chart Recorders Extech RH522B Clocks you're immediately set up toHumidity and Temperature Probe For Extech RH520 Paperless Chart Recorders Extech RH522B The Extech RH522B is a replacement Humidity and Temperature Probe for the RH520B Paperless Chart Recorder. It has a measurement range of 30C to 60C ( 22F to 140F) and 1% RH to 99% RH. No calibration required.