4 Buttons Electronic Customer Feedback Device

4 buttons Customer Feedback Terminal Product Specification: 4 Buttons Customer Feedback Device Model: SX-CFS04 Appearance 4 keys,with rating disply,can embed employee card,sliver-grey case. Working temperature 0~45°C Working Humidity 20%-85% Size 175mm*120mm*130mm Weight 110g Interface USB Power Supply 5V±10% Products Introduction: 1) USB interface is simple and convenient, no wiring, operating software installed on your computer can be evaluated. 2) accepts customer reviews,