the thing works great. Just plug it in, press and hold the "up" button for 3 seconds to display the Fahrenheit scale. Press and hold the "Down" button for 3 seconds. If you want a Celsius scale, press and hold the yellow button for 3 seconds to adjust the time up or down. Press the yellow button again and the sensor will be placed where you want to set the temperature. I drilled a hole in the side of my solar panel. This device is not waterproof. So if you use it outdoors like I did, make sure it's protected as well as the sensor. I use it as a thermal switch for my solar pool water heater. I made a solar panel with 50ft of copper tubing inside encased in glass [2 of them]. I wanted this switch to be on the swamp. a pump located in a basin 18 inches below the surface. I wanted this to happen when the solar panel hits 100f. not on the timer because some days it rains. I connected it to this drain pump. which directs water to solar panels located 6 feet below the pool's surface. At a distance of 0.15 feet from the pool. = OH_AUI_I_D_OLD_O6? 5 foot glass solar panels. Each 50-foot copper pipe inside can raise the pool temperature by about 10 degrees. I'm on 60 gallons per hour. hours it raises the entire pool anywhere from 1 to 3 degrees more than the sun itself in a day. The pool is 8600 gallons so in 14 days the entire pool got 10F warmer than the sun itself. Works especially well at the beginning and end of the season to extend your pool usage
Thermometer B.Well WF-4000 white
57 Review
VIVREAL 4 In 1 Stud Finder Wall Scanner With LCD Display - Center Finding Beam Finder And Sound Warning For Wood, AC Wire, And Metal Studs (Black/Silver)
24 Review
Qingping Qingping Bluetooth Smart Alarm Clock Green
22 Review
Detector Bosch GMS 120 Professional
28 Review
π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
8 Review
Kapro - 353 Professional Ledge-It Try & Mitre Square - For Leveling And Measuring - Features Stainless Steel Blade, Retractable Ledge, And Etched Ruler Markings - 12 Inch
23 Review
Triangle Group TR918 225/45 R18 95V summer
61 Review
π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review