[Photoelectric Controls]

These "eyes" work great for stopping a door or gate from closing. 

Specifications

• Polar Scanning Photo Head with Relay
• Enclosed Switch - NEMA 4
• Sensing Distance: 30 Feet
• Available in 24V or 110V
• UL Listed, CSA Approved
• All units shipped with heavy duty mounting brackets and large reflector!

size: 205k
requires flash 5 plugin