Modular LED steady/flashing signal tower lightsAdded a separate color filter lens inside the outer lens to help provide a clear signalThe addition of modules and change in color arrangement can be achieved without the use of tools by using the Lock-type structureQTCA type offers a nifty integrated lens and cover for a simple aesthetically pleasing productWhen it is turned off the milky color filter provides comfortable viewing at close proximity for the operatorA variety of mounting bracket selections for the pole mount type to fit your location and mounting needsBuilt-in buzzer available : Volume of Max.85dB at 1mAvailable in customized 2 sound buzzer type and high volume(100dB) buzzer typeCan be used with NPN open collector transistor driven input, which allows direct connection to a PLCFlashing rate : 60-80 flashes/minAmbient operating temperature : -30°C to +50°CProtection rating : Standard type-IP65, Built-in buzzer type-IP54Pre-wired is standard. Can customize the product with the M12 connector if requested24VDC UL listed model is optionally providedCertificates : CE Compliant, UL ListedCompliant with RoHS directive