1. Wide working voltage range: 8~24V. Low power consumption 2. Lock shells are made from deactivated 304 stainless steel, anti-force performance: 250kgs 3. Three times surface treatment: copper plated, nickle plated and matt chrome plated 4. IP65. All electronic parts are protected in the sealed ABS box 5. Omron micro detective switch from Japan, 300,000-time working life 6. Mechanical emergency lever, can be unlocked manually in case of power failure 7. AWG24 wires with PVC protecting tube 8. Support customizing wires and connectors