·Image source: 3D RGB LED

· Aerial display: Angle of view ± 30 °

·Sound: Buzzer

· Size: 158 * 68 * 63mm

·Operating system: Arduino

· Working environment: -10 ℃ -60 ℃

·Interface: USB, power switch button, 4-wire button interface

·Air interaction: reaction delay of 50ms, touch accuracy of 2mm

·Button signal duration: ≥ 100ms

·Key signal definition: LED+LED - KEY+KEY-

·Power supply: DC 24V, 1.2W, power supply line subject to actual shipment

·Image source: 5-inch LCD screen 800 * 480

· In the air display: angle of view ± 30 °

·Sound: Mono voice output

· Size: 148 * 196 * 74mm

·Operating system: Android

· Working environment: -10 ℃ -60 ℃

·Interface: USB, power switch button, 4-wire button interface

·Air interaction: reaction delay of 50ms, touch accuracy of 2mm

·Button signal duration: ≥ 100ms

·Key signal definition: VCC, LAMP, KEY, GND

·Power supply: AC 220V/50HZ or DC 24V, 20W