Features: Operating voltage: 12/24 Vdc/Vac Consumption: 100 mA Response time: 1 seg. Operating temperature: -10 ~ 50 °C Relay output COM/NO/NC Operation distance between transmitter and receiver: 10m Dimensions: 4.5 cm Width x 7.5 cm Height Weight: 100grs. What does the XBSIR33 include? 1 IR transmitter with relay output NO/NC/COM, requires 12 Vdc power supply. 1 IR receiver, requires 12 Vdc power supply. Key Features 33 ft Infrared Detection Range for Precise Obstacle Sensing 12/24 VDC/VAC Dual Voltage Operation for Flexible Installation Fast 1 Second Response Time for Immediate Safety Activation IP54 Weatherproof Rating for Outdoor and Harsh Environments Relay Output With NO/NC/COM Contacts for Versatile Control Compact 1.8 x 3.0 in Design for Space-Constrained Applications