Youshiko YC9311 Wireless Temperature & Humidity 3 - Channel Sensor

Additional or Replacement, Three channel Wireless Temperature & Humidity Sensor, 433MHz
Compatible with Youshiko YC9350 / YC9342 / YC9352, Digital Weather Station
Transmits up to 50 meters or 160 feet from the main unit
Dimensions: 65 x 35 x 100 mm (L x W x H) Wall mounting or Desk top / Table standing / Weather proof casing (Please mount this sensor outside in a sheltered place to avoid direct heavy rain and direct sunshine for best results / readings) .
Requires 2 x AA battery (not included), Dimensions: 65 x 35 x 100 mm (L x W x H)