| Item | Parameter | Remarks |
| Working voltage | ≤6.5V | |
| Working current | ≤1mA | |
| Wire resistance | ≤50Ω | The starting point for the Guard wire measurement is 1.0 mm from the edge of the carbon slurry and the end point is the end of the guard wire. The starting points of the remaining wires were measured at a silver paste 1.0 mm from the edge of the carbon slurry, and the end points were at the opposite corners of the respective touch keypad. |
| Insulation resistance | ≥100MΩ | The insulation resistance between any two wires should be greater than 100MΩ. Select two connector terminals to be measured at the measurement point. The test voltage is 10 VDC. Reference standard GB 5095.2 test |
| Contact resistance | ≤100mΩ | The contact resistance of the terminals and connectors as well as the terminals and the silver paste should be measured. |
| Withstand Voltage | 250VAC 1min | No breakdown or arcing. The withstand voltage between any two wires should be measured. |
| Bottom PET circuit | PET, 0.125mm |
| Silver paste | BY9700 |
| Carbon ink | Acheson ELECTRODAG 423SS |
| Insulation ink | Acheson ELECTRODAG 452SS |
| Top PET adhesive | 6050ST PET adhesive |
| Double side adhesive | 3M 468MP |
| Connector terminal | CJT A2550-TP |
| Connector housing | CJT A2550H-8P-A |
