Allen-Bradley 440L T4JL0800YD Safety Light Curtain

The Allen-Bradley 440L-T4JL0800YD GuardShield safety light curtain is a Type 4 transmitter/receiver pair with an integrated laser alignment system, designed to protect an 800 mm-high zone around machinery by detecting any intrusion into the guarded path. It provides 80 beams with a 14 mm inter-beam resolution across the 800 mm protected height, enabling fine-grained interruption detection and minimizing nuisance trips while maintaining strong safety performance. As part of the GuardShield family, it is intended for use in presence-sensing safety circuits on industrial equipment, guarding access to work areas where a beam interruption should stop the machine or trigger a safety response. The integrated laser alignment capability simplifies installation and beam setup, helping technicians align beams accurately during commissioning and reducing the time required to bring the system online.