This is an analog temperature display built from a digital sensor ds18b20, a mini servo, and electronics based on an esp-12f module
It has the following features.
Self contained unit holding electronics, servo and battery Good accuracy and precision using ds18b20 digital sensor Rechargeable LIPO with inbuilt charger Very low quiescent current (< 20uA) for long battery life Servo only turned on for short periods again giving good battery life. Normally the module sleeps between temperature updates but can be turned into a non sleep mode for checking and configuration Configuration data upload and servo test from web interface Minimum, maximum temperatures, Centigrade.Fahrenheit, and update interval configurable Battery monitoringSoftware can be updated via web interface”