1.Display: 1.5”LCM,128*64Dots.2.Keyboard: 5 keys operation:,“Up”,“Down”,“Left”,“Right”,“OK”3.Power Supply: Interchangeablerechargeable battery;4. Heat warm up: Chamber & Sensor warm up automatically5.Auto flow monitoring:Flow detect automatically6.Storage environment: -40 Degree C to 85 Degree C.7.Operating environment: -20℃to 60℃.(LCM will switch off and shift toLED indicating under -10℃)