Acron Corporation P-4000 EEPROM Programmer for Acron Spartan VI and AV-4000 Alarm Systems. May work with other Acron systems. Keypad and LED displays work but unable to test beyond that. Case in good condition. Has tag that states that it was last serviced / updated in 1989. Could be re-purposed for other projects. Unable test so it is sold as-is for parts.