Kimo Kistock KH-30 data logger
Model: KH-30
Measuring range: -40...+70°C
Measuring range: 0...100%RV
Memory: 172,000 measurement points
IP class: IP68
Battery: non-replaceable
Battery life: 8 years; at 1 measurement every 10 seconds
Communication: Bluetooth
Software: App (iOS and Android) is free to download
p/n: 28169