[ Room Swimming Pool Hygrometer]External 2 waterproof probes. 5 in length [Measurement range]Temperature: -40 to -125 degrees Celsius; Temperature measurement accuracy: 1 degrees Celsius. [ LED LCD screen] [Hanging holes on the back]To hang ; Size: 210 x 170 x 25mm Voltage: AC 100-240V Plug Type:EU Plug,it applies to Indonesia, , , , and so on : Temperature Sensor Model Number: LX935TB Max Measuring Temperature: 49C & Under Style: Standing and Wall Hanging Usage: Industrial Power Type: Charger LED Light: Red Probe Cable Length: 5m Probe Type: Waterproof color:As shown :Plastic + Metal Package Contents: 1 x Water Temperature Sensor 2 x Probe Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.