No other manufacturer can match the experience andcreativity of Allstar operators in the design of electronically controlled. The full line of Allstar operators comply with the latest and most stringent safety standards set by Underwriters Laboratories (UL), the world's most respected authority in the field of testing and certification of consumer products. Allstar All operators are (no extra cost) with multiple redundant safety systems (Multiple Redundant Safety Systems), anti electrical discharge, a powerful ½ HP motor with thermal protection and instant reverse system and a solid warranty product.