Alerts user when dust bin has reached a preset fill-level using an adjustable infrared sensor. High intensity strobe light can be mounted on the wall, on the drum, on your system - you decide! Installs in minutes to any size, shape, or type dust container! Detects both liquid and solid materials within the drum. User controlled fill-level can be adjusted for distances 1" to 20" from the lid. Includes necessary wiring and installation instructions. Ideal for use with wood dusts and other general dust collection applications. Takes the guesswork out of when to empty your dust collector or pre-separator’s dust bin. This optical sensor uses infrared technology to automatically detect when the dust bin is full and alerts the user with a high visibility strobe light - perfect for busy and noisy work environments. The Dust Sentry is ideal for use with wood dusts and other general dust collection applications. Installs easily to the lid of any shape/size dust bin and can be adjusted to detect any preset fill level (4" to 6" from the lid is recommended). Strobe indicator light can be mounted up to 8 feet away from the sensor for maximum visibility in the shop.