This UHPPOTE Electric Drop Bolt Door Lock Fail Safe 12VDC with Time Delay for Access Control is the perfect solution for your access control needs. It is low temperature, safe and durable, with low power and environmental protection. It has a long life with 500000 cycles and double protection for loading current. It is made of superior strength aluminum alloy and solid stainless steel bolt, making it reliable and secure. It is easy to install and use, and is perfect for any access control system.