HEATIT ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F

Product Review

ThermoPro - Life Like A Pro!
Equipped with a professional grade indoor/outdoor sensors, ThermoPro outdoor sensor features powerful wireless technology, a rainproof & rechargeable design and an integrated hanger for easy mounting. No matter you're concerned about keeping your greenhouse suitable for plants, or just plain comfort, ThermoPro TX-4 transmitter tells you what you need to know about the outdoor temperature.

Specifications:
1. 433 Mhz transmission frequency.
2. Transmission range up to 200 ft. (range maybe reduced based on interference present).
3. Universal Transmitter for TP60S/TP62/TP63/TP63A/TP65A/TP67A Series Indoor Outdoor Thermometer.

Package Content:
- Remote Sensor *1
- Charging Cable *1

NOTE:
The remote unit should NOT be placed under the direct sunlight, it will heat up the remote sensor which leads to higher temperature reading than the air temperature which is supposed to be measured.
The remote sensor must be always placed upwards so that rain won't get inside the sensor through the vent holes on the bottom of the senor, which functions to let the remote sensor detect the environmental temperature more precisely and quickly.

Synchronize Remote Sensors
1.Place the remote sensor near the base station.
2.Install batteries into the base station and the RF signal icon on the base station will flash.
3.Select the channel, press and hold the ON/OFF button on the back of the remote sensor for 2 seconds.
4.The remote sensor temperature/humidity will appear on the base station.

Universal 433MHz outdoor sensor is compatible with all 433MHz ThermoPro indoor outdoor thermometer hygrometers; Accessory only, can not be used alone(Before purchasing a new transmitter, please confirm the model and frequency of the transmitter you already own.)
With rechargeable lithium battery technology to monitor humidity and temperature as low as -31°F/-35°C, assuring transmission in snow; Charging cable included
Sealed waterproof outdoor sensor assuring transmission in rain; With additional remote sensors, track environmental conditions in 4 locations at most; Tabletop or wall-mountable design
Using a 433MHZ signal, the additional remote sensor transmits temperature and humidity readings for ThermoPro indoor outdoor thermometer up to 200 feet/60m range; Temperature accuracy: ±2°F,Humidity accuracy: ±2~3%RH
Temperature range: -31 to 158°F (-35 to 70°C) ; Humidity range: 10% to 99% RH

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ThermoPro TX-4 with 433MHz Frequency Fitting Waterproof Transmitter Additional Outdoor Sensor for All 433MHz Indoor Outdoor Thermometer Temperature and Humidity Monitor

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