A standalone keypad will allow an authorised user to activate an electric release mechanism by typing in the appropriate code.
The ACT10 is a very robust surface mount unit, simple to install and to programme and has many features, including:-

10 user codes
2 user groups,
Interlock, fire alarm input and door monitoring.
A zinc die cast housing with stainless steel keys
Front and back tamper
Back lit keypad
Operates 12 to 24 volts ac or dc, 40/120ma
Operating temperature range. -10 to 50 degrees Celsius
Indoor or outdoor use. IP54 rated. Dimensions: H 138mm x W 87mm x D 37mm

 
ACT10 Manual Rev31