Water-Resistant Temperature and Humidity Sensor HT.w with Bluetooth Data Logging and Replaceable CR2477 Battery

HT.w records temperature and humidity every minute and stores the most recent 45 days on the sensor. Connect a compatible phone over Bluetooth to download readings, view history graphs and receive condition alerts in the SensorPush app.

Key Features

• O-ring seals and a protective sensor membrane provide water resistance for damp environments and outdoor monitoring. The sensor is not submersible.
• Minute-by-minute history helps you follow conditions in refrigerators, instrument cases, humidors, basements and greenhouses.
• View graphs in the app or export readings to CSV for further analysis.
• One phone can monitor multiple sensors, and a sensor can be monitored by multiple phones.
• A user-replaceable CR2477 battery has a stated typical life of over two years; extreme cold can shorten battery life.
• Internet access and remote alerts require the optional SensorPush G1 WiFi Gateway. Without the gateway, readings and alerts are downloaded over Bluetooth.

Specifications

• Model: HT.w
• Temperature range: -40–60°C (-40–140°F)
• Humidity range: 0–100% RH
• Typical temperature accuracy: ±0.2°C from 0–60°C; ±0.6°C over the full range
• Typical humidity accuracy at 25°C: ±2% RH from 10–90% RH; ±4% RH over 0–100% RH
• Maximum temperature error: 0.4°C from 0–60°C; 1°C over the full range
• Maximum humidity error at 25°C: 4.5% RH from 10–90% RH; 7.5% RH over 0–100% RH
• Sampling interval: one minute; onboard storage: 45 days
• Phone requirements: iOS 11 or later, or Android 9 or later, with Bluetooth 4.0 or later
• Stated wireless range: up to 100 m in unobstructed line-of-sight conditions; obstacles and interference reduce range
• Battery type specified: user-replaceable CR2477
• Dimensions: 40 × 40 × 16.5 mm; weight: 23 g

Prolonged exposure above 80% RH can create a reading offset of up to +3% RH; the effect gradually reverses after returning below 80% RH. The optional gateway is sold separately.