•Put the laser level in Pulse (Outdoor) Mode.
•Made sure the laser level and the Receiver windows were clean.
•Recheck the batteries in both devices (Laser level & Huepar Laser Receiver).
•Made sure your laser level could used in accompanied with Huepar Receiver.
•Recommended for using with Huepar 901CG/902CG, BOX-1G/R , GF360G/R, 621CG/R, 622CG/R, 602CG/R, 603CG/R Laser Level.