The PowerScan family of bar code readers are the ultimate industrial hand held scanners designed and constructed to withstand the toughest environmental conditions. The PowerScan PD9531 imager is the corded version of the new series. The 9501 cordless area imagers are comprised of the PBT9501 / PM9501 imagers. The PBT9501 features Bluetooth wireless technology and the PM9501 features Datalogics STAR Cordless System narrow band radio. The PowerScan 9501 imagers have an ergonomic shape with well-balanced weight and an intuitive aiming system allowing the highest first-pass reading rate while reducing unnatural wrist movement. Additionally the PowerScan 9501 area imagers use a soft-pulsed white illumination light resulting in reduced flashes which is much gentler on the eyes during scan-intensive operations. The 9501 area imagers also feature Datalogics exclusive 3 Green Lights (3GL) for superior good-read feedback. The patented Green Spot technology directly on the code and dual Good Read LEDs increase visibility at any angle. All models have multi-interface capabilities featuring the most popular interfaces: RS-232 Keyboard Wedge USB and offer an optional Ethernet for standard or industrial uses. The PowerScan 9501 imagers introduce a new technology with the Liquid Lens feature which increases the depth of field and allows the reading of standard wide and high density bar codes. Datalogics Motionix motion-sensing technology detects the natural actions of the operator to automatically switch the scanner into the desired scanning mode (hand held or presentation scanning).