Compatible Laser LevelsThis Huepar laser receiver can only be used with Huepar Laser Levels have Pule Mode Function!!! Compatible with Huepar BOX-1G, BOX-1R, HM03CG, GF360G, B03CG, S02CG, S03CG, S03CG-L, S04CG, S04CG-L, S03DG, S03DG-L, 621CG, 621CR, 6211CG, 7211CG, 703CG, 704CG, 503CG, 503DG, B02CG, B21CG, 602CG, 602CR, 603CG, 603CR, 603CG-BT, 901CG, 902CG, 904DG, 8211G, LS03CG, LS03DG, LS04CG, NT411G, LS41G, L141G, L011G, P02CG, P03CG, P03DG, P04CG, R03CG, 622CG, 622CR, 5011G, E011G, W04CG, W03CG etc. Can NOT Be Used WithPlease NOTE the receiver is NOT Compatible with Rotary Laser Level !!! This Huepar Laser Receiver can NOT be used with Huepar 9011G/9211G/FL360R/FL360G/8300G/B011G/B011R/FC011G/FC011R/9300G/GK011DG Laser Level and RL200HR/RL200HVG/RL300HR/RL300HVG Rotary Laser Level !!! Necessary to Keep the Pulse Mode ON & Available for Red and Green Pulse Laser NOTE: It is Necessary to Turn ON the Pulse Mode of the Laser Level when Using With This Huepar Laser Receiver. Please Keep the Pule Mode ON All The Time When Working with the Huepar Laser Detector. After the pulse mode turned on, the Huepar laser receiver allows detection of Red and Green pulse laser beams in bright light conditions, working range up to 200ft (60m). Clear Multi-sided ReadoutsErgonomic design with display on the front, side and back of receiver, offers easier visual readout. This unit is outfitted with a dual-sided Bubble Vial on both the front and top, in order to more accurately determine the level. Precise Optical and Acoustic SingalsThis laser receiver features a user-friendly interface and is smart in its simple design. Optical and acoustic signals help to locate the laser plane quickly and accurately. The LED indicator provides a clear and accurate signal. Beep sounds will remind you when you find the target. Long Battery Life and Clamp HolderThe receiver comes with a 9V dry battery, providing you with about 70 working hours. There is also an automatic shut-off feature that power down the device after about 8 minutes of being idle to extend battery life. The attached heavy-duty clamp makes it easy to mount the detector to a rod or other target point.