Infos: http://www.raspberrypiwiki.com/index.php/Sonoff_TH_10A/16A

It can used for : Product ID: 1082336 (10A) or Product ID: 1082335 (16A)
Another Waterproof Temperature Sensor: Product ID: 1171068

Features:

Measuring range:
Temperature: -40?80??br />Humidity: 0-99.9% RH
Accuracy: (in 25??
Temperature: 0.5??br />Humidity: 3% RH (10…90RH)

Sensor type: Temperature resistive sensor, Humidity capacitive sensors
Operating temperature range: 40?80??br />Power supply: 3.3V~5.2V
DC (5V recommended)

Note: Do not include the Thermostat Module.

Package Included:

1 x AM2301 Sensor Module (Cable length: about 50cm)