1. LOW VOLTAGE ALARM – Low pressure prompts each time opened the door by the card, when the voltage is lower than 4.8V. External back-up power supply interface: can be turned on more than 100 times from the first low voltage alarm.
2. UNLOCK MODE – For IC card to open the door, like W-shaped bracelet card, silicone bracelet card, button card, match to your exclusive style. Single and double card, can arbitrarily set the one-time opening function. Optional strap type, button type and other card types, is easy to carry, has waterproof, high temperature resistant, and anti-corrosion function.
3. SAFE – Pure alloy lock tongue, upgrading safety strength. With gear combination movement, more reliable and safer operation.