The Sargent security system can handle 2,000 users and audits. It features PDA infrared communication via software from the outside of the door. Its RF technology option offers the end user the ability to remotely control the lock by means of a hand-held transmitter or RF fob. Multiple-user modes include passage, unlock/relock, emergency and one-time user. The system features weather-resistant electronics, and its lock control mechanism is located on the inside of the door. It’s useful for Grade 1 mortise and bored locks and exit devices. Sargent/Essex Industries.