Technical specifications
Main chipset: German Philips and Switzerland EM-MARIN
Battery: 4 x AA Alkali batteries for 18-month use

Power consumption:
Static: 3-20??A pulse
Dynamic: 200mA
Low voltage alarm: 5V
Induction distance: 3-5cm
Relative humidity: Less than 95deg. C (damp proof materials sourced from the UK)
Anti-static: 15, 000V, can work stably under strong static interruption with any information loss
Security: Hidden mechanism lock
Stability: 48-hour test on circuit board