Electric Drop Bolt

NI-620A sturdiness electric bolt lock is a High security lock .This model has 2 working modes:Power-to-open & Power-to-lock. coming with Mechanical lock cylinder. High security locks suit for framed glass doors, wooden doors, metal doors, fire doors. Lock body are made of 304ss high hardness, corrosion resistant stainless steel, all solid lock withstand 2000 pounds linear positive impact. Owning unique Emergency mechanical locks, used in emergency situation. Special photoelectric control ultra-low temperature, low efficacy,Safe and reliable energy saving. click for more info: https://www.chinanordson.com/sturdiness-electric-drop%E2%80%82bolts/sturdiness-electric-bolt-lock.html