Vintage Archer Photo-Electric Relay System~ Model 95-866, Transmitter and Receiver retailer Work~Photo Cell|Lamp|Door Entry Alarm

retailer Archer Vintage Photo Cell Electric Relay System - Transmitter Light Source and Receiver Switch Box - Tested And Working. Each unit is 4-5" tall.
One use was as a door alarm system. When the light source is broken to the receiver, it trips the "alarm", and the buzzing starts to happen.
Excellent condition

See photos for additional description and condition
Free Standard Shipping