1. Remotely control on/off via mobile phone anytime, anywhere2. View current, voltage, leakage current, total kWh on mobile phone3. Overvoltage/undervoltage/overcurrent/leakage current can be set in the app, and these parameters can also be set on the protector4. This device has a memory function. When the power is off, the device can memorize kWh, overvoltage, voltage and overcurrent.5. Rated power supply voltage: 230V; frequency: 50/60HZ6. Power display range: 0-99999.9kWh7. Undervoltage protection: 145V-210V (adjustable) (default: 175V)8. Overvoltage protection 240V- 300V (adjustable) (default: 275V)9. Overcurrent protection 1A-63A (adjustable) (default: 63A)10. Overtemperature protection: 10~85 degrees Celsius (this parameter is only set on the App)11. Leakage protection: 10-99mA (adjustable) (default: 50mA) This function can be turned off12. Reconnection time (delayed opening time): 10s-99s (default: 30s)13. Model difference: SVP-688W-L has backlight display, SVP-688W does not have backlight displaySpecification: Package Weight One Package Weight 0.20kgs / 0.43lb One Package Size 10cm * 9cm * 5cm / 3.94inch * 3.54inch * 1.97inch Qty per Carton 100 Carton Weight 18.90kgs / 41.67lb Carton Size 46cm * 24cm * 32cm / 18.11inch * 9.45inch * 12.6inch Loading Container 20GP: 754 cartons * 100 pcs = 75400 pcs40HQ: 1752 cartons * 100 pcs = 175200 pcs