TYPE 4, SIL3, SILCL3, PL E, CAT. 4. WATERTIGHT ENCLOSURES ALLOW SAFETY LIGHT CURTAINS TO BE USED IN HARSH WORKING ENVIRONMENTS WITH EXPOSURE TO WATER JETS AND STEAM. THE USE OF INERT AND NON-TOXIC COMPONENTS ALLOW WTF AND WTHF ENCLOSURES TO BE USED IN THE FOOD & BEVERAGE INDUSTRY, WHERE FREQUENT WASH DOWN PROCEDURES ARE REQUIRED. INTEGRATED ANTI-CONDENSATION SYSTEM. HARDWARE CONFIGURATION: NO PROGRAMMING NECESSARY, EASY TO INSTALL AND REPLACE. UNSHIELDED CABLES UP TO 100 M CAN BE USED TO CONNECT THE SAFETY LIGHT CURTAIN. WHAT'S IN THE BOX: EMITTER, RECEIVER, STANDARD FASTENING BRACKETS, PRE-WIRED CONNECTION CABLE