Extech Instruments Wireless Hygro-Thermometer Transmitter RH200W-T

Base Station LCD with Auto-Night Light displays local and up to eight remote Temperature/Humidity readings either auto-cycle or manual mode from the wireless transmitters. Easy-to-read 1.3'' (33mm) oversized digits. Min/Max recording with reset. Indoor Comfort icons displayed on Base Station indicating too cold, comfortable, or too hot/humid conditions. Trend arrows indicate rising, steady or falling of the Temperature/Humidity readings. Snow icon appears when remote temperature is 37.4°F (3°C) or below. Transmitter LED flashes to indicate normal operation. Transmitters can be mounted up to 98ft (30m) from the base station. Operates at 433MHz; FCC approved.