Honeywell Sensing & Control manufactures safety light curtains and multi-beam safety light curtains. The two types of safety light curtains feature resolutions of 18mm, 30mm, 14mm, and 80mm that permit detection of approaching body parts. The multi-beam light curtains are composed of up to four infrared beams aligned on an emitting column and receiving column. These curtains are available with floating blanking, muting, manual restart, and serial connections.