Olympia Alarms Wireless alarm system extension 626755 - Olympia 5964, The Olympia IR 500 serves as a wireless alarm system extension, enhancing security with infrared light barrier technology. Manufactured by Olympia, it ensures reliable intrusion detection with easy integration into existing systems. Ideal for residential and commercial properties, the Olympia 5964 model efficiently bolsters perimeter security. Olympia 5964 IR 500 Wireless Alarm System with Doorbell & Alarm Function