A, 1, electrical characteristics (1) the basic features 12 to 24 v DC input voltage (2) working current 5 a (MAX) (3) standby current 25 ma (4) or less load characteristic constant voltage (5) the load power 60 w 2 or less, general parameters (1) touch the induction distance is 6 mm or less (glass) of medium (2) glass, plastic, touch the induction medium (must be an insulator) (3) the ambient temperature (Ta) and 40 ℃ ~ + 45 ℃ (4) the highest surface temperature (Tc) 70 ℃ (5) the relative humidity of 25% to 90% RH 4. System, safety certification and environmental protection (1)CE Certificate No. : BST180611346701EC (2)RoHS Certificate No. : BST180611346701CC operation method: long press > for 1 second; Short press ≤1 second; Key function: (function can be customized) Key1 lamp dimming: when the backlight is blue, the key does not respond; The backlight white length is dimmed. Key2 anti-fog switch: short press open/Close anti-fog switch; Long press the button to prevent fog; Open anti-fog backlight white, close anti-fog backlight blue. Key3 light switch: Press on/off; Long press to turn off the light; Turn on the light, the backlight is white; turn off the light, the backlight is blue. Key1 backlight color changes with KEY3.