This anodized aluminum Humidity Indicator Plug has an electronic display.  Pressing the button initiates the following display sequence, showing each measurement for 1-3 seconds:

1. Relative Humidity: 5 to 80%RH
2. Temperature: -20 to 60°C
3. Dewpoint: -20 to 20°C

The flat lithium coin cell battery has an estimated life of 5 years. The central core can be removed to provide battery replacement access. The assembly has IP67 ingress protection and can be stored between -40 and 80°C.

The external o-ring is EPDM, and the internal seal is Nitrile.  Other material information available upon request.
Also available: RFI Protection

Weight: .3 lbs
Mounting Requirements:
Mounting hole diameter: 1.435 ±.015 (38.5 ±0.4 mm)
Thread size: M36x1.5 – 6g
Recommended installation torque: 40-50 in-lbs (4.5-5.6 Nm)
Maximum wall thicknesses: .35 in (8.9 mm)
Minimum wall thickness: 0