User Input Numeric keypad facilitates both local and remote configuration and testing. Power Powered by UL-approved 15 volt DC power supply module. RF Technology Radio frequency based system provides reliable, barrier free communication between system controller and its assigned keypads. Robust error checking is used to insure accurate communication of all responses and control functions. Transmitter is crystal referenced and frequency modulated.
Receiver is crystal controlled superheterodyne design.
Receiver is four channel superheterodyne. The system is designed to provide reliable operation in an area 75 feet by 75 feet. Greater range can be achieved by using an optional antenna kit. Speed Keypads are interrogated at a rate of 100 keypads per second allowing for 650 keypads to be collected in less than 7 seconds. Group size is adjustable allowing for groups of 50 keypads or less to be collected in approximately one-half second.