S4 SERIES PHOTOELECTRIC PROTECTOR
INSTALLATION AND USAGE MANUAL
SHANDONG LAIEN OPTIC-ELECTRONIC TECHNOLOGY CO. ,LTD.
Please read this document carefully and thoroughly before installation and operation,
because the correct and optimum use of this product is important for the personal safety.
Please give the user this document with the photoelectric protector if you are an agent, a
dealer or a machine manufacturer which forms a complete set, because this document is
important to guide the user correctly to install and operate.