12 V digital thermometer with temperature probe -50 ~ 110 ° C Application car pool aquarium terrarium nursery water tanks fridge industrial equipment and all kinds of temperature measurement General features Measurement accuracy: 0.1 Measurement range: -50 ~ 110 ° c Size: 48 * 29 * 23MM, L * W * H Power supply voltage: DC5V ~ 12V (15V limit voltage, exceeding will cause the thermometer to fail) Current: 18mA Power cable length: 20 cm Probe length: 1m Refresh rate: 200MS / sec Color: red, blue, green Working environment temperature: -40 ° c ~ 65 ° c