this hidden bolt lock is easy to install just using round drill bit 
Solenoid attempts to lock several times and then shuts off if door not closed properly to prevent burning out, Easily connects to Jenix Electronic RFID access control pads
Suitable for office-type applications, no need any specific tool using simply by drill installtion can be done in wooden frame.
Powered by a solenoid, Stainless steel for strength and long life, 5,000,000 operations lifetime
Superior Strength Aluminium Alloy,Solid Stainless Steel Bolt. Double protection for loading current.
Provide you a safety circumstances and protect your property
 small size 12V DC operated . as long as powere remain in lock , lock remain in lock condition, as soon as power cut lock gets open. failsafe dead bolt lock. 
SKU - K205 Hidden Bolt Lock