Stand Alone Door Entry Controller. The ES-1 is a door controller designed to operate a door strike or magnetic lock upon receiving a valid card read and/or keyless entry code from Wiegand devices. One ES-1, one or two Wiegand devices and a door strike or magnetic lock of your choice is required for each entry point. The Wiegand device used may be the Viking model PROX-1 Proximity Card Reader and/or the Viking model PROX-2 or HID-2 Wiegand Output Keypad or any other card reader, RF transmitter or digital keypad that outputs the 26 bit Wiegand format. If two Wiegand devices are used, one can be placed on each side of a doorway to control access in both directions (entry and exit). Up to 250 valid Wiegand codes can be programmed into the ES-1. Other programmable parameters, like relay activation, mode (normal, off, or open) and facility codes are also stored in non-volatile memory. All programming is done with a local touch tone phone. Up to three ES-1s can be programmed simultaneously if they will be sharing all the same programming codes and parameters. Entry logging is possible with the ES-1 s log bus data output. Applications Business entrances High rise apartment buildings Condos Senior citizen buildings Assisted care centers Retirement homes Gated communities Features Up to 250 tenants Program and control with a Touch Tone phone Use with any 26 bit Wiegand device Supports 1 entry point Compatible with Viking models PROX-1, PROX-2 and HID-2 Non-volatile memory (no batteries required) LOG BUS data output for logging entry events Card plus keypad mode for highest security One time codes for visitors Bi-directional (entry and exit) control One year warranty Made in the USA.