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Indoor Outdoor Thermometer Wireless - Convenient Wireless Outdoor Indoor Thermometers: Information to Know

weather sensors radio range

Wireless outdoor indoor thermometers are instruments used for monitoring temperature in one to three different locations. The instrument consists of a base unit, the receiver, that rests indoors and one or more sensors placed outside or in other indoor locations such as garages, greenhouses, or freezers. An absence of wires contributes to the ease of set-up. Basically, accurate measurement, proper mounting, and the application of a few AA or AAA batteries are sufficient for successful setup.

Many wireless outdoor indoor thermometers measure temperature based on electrical current. Outside sensors house thermoresisters. These are critical components which measure the resistance of the electrical current through a circuit. This resistance fluctuates with the difference of surrounding temperature, therefore, resulting in the viewed readings. Once the temperature is determined, usually every 4 seconds, it is transmitted via radio waves to the indoor base unit, the receiver. The weather data is then displayed digitally.

Different brand products use a variety of radio frequency transmissions, Megahertz (MHz). For example, some systems operate on 915 MHz or 433.9s MHz. All work fine. However, note that both the receiver and the sensors must function at the same frequencies. Radio transmission range of 100 ft. is common, but there are wireless thermometers that transmit up to 330 ft. The range reported on specific products is based on open air conditions. Because radio waves do not bend but rather go through materials, few obstructions are desired. Therefore, minimize the number of walls that lie between the sensors and the indoor receiver for accurate readings.

Purchasing the best AA or AAA batteries for your wireless thermometer is important. Because alkaline batteries are not as effective for temperatures below 4 degrees Fahrenheit, the U.S. National Weather Service recommends the use of lithium batteries for the wireless outdoor indoor sensor units. A wider range of temperatures can be accurately detected with lithium batteries.

Wireless outdoor indoor thermometers are found with almost any weather and time feature desired. However, the critical point is usually the display of the weather data itself. A display large enough to be seen across a room with a backlight is the best. Most units can report the temperature in both Fahrenheit and Celsius. Mounting options are also important. Means for a wall mount and free standing on a level surface should be available. Afterwards, an entire array of options exists such as humidity, barometric pressure, temperature trends, comfort level icons, freeze alarm, atomic clock, and calendar displays –with a multitude of language options. There are even speaking thermometers for people with problem vision.

Consider these factors when setting up an outdoor indoor thermometer. First, obstructions reduce the range and quality of the transmission signal from the sensors to the receiver. One typical wall (dry wall) reduces the range distance by one-third. Also, because of absorption or reflection of radio waves, increased reduction occurs with walls of other material types such as stucco, metal beams and certain types of glass.

Second, the goal is to mount your outdoor thermometer sensor away from extreme and artificial weather conditions. The U.S. National Weather Service recommends that wireless outdoor sensors be mounted 4 ½ feet above the ground and on the north side of the house. Place it a minimum of 6 inches from the house siding. Other areas to avoid are direct sunlight, and dryer vents. Although most wireless outdoor indoor thermometers can handle fog and mist, do not expose them to direct rain. Usually, they are not water proof.

Radio interference will render your weather data useless. Therefore, place all sensors and receivers away from computer monitors, radios, and any other devices or equipment that might be operating on the same frequency.

Wireless outdoor indoor thermometers are easy to obtain. They are manufactured and sold by numerous companies. Honeywell, Oregon Scientific, Accurite, LaCross Technology, are a few of the current popular brands. There are many more. Before purchasing, read consumer reviews specific to your brand and model. Next, review specification and warranty information – know exactly what you are getting. Most of these thermometers range from $14.00 to $80.00, all of high quality and with a one year warranty. Full knowledge before the actual purchase will make for complete satisfaction.

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