ROTO SENSE - Red and green rotary laser receiver - CONDTROL ACCESSORIES
AdirPro Universal Rotary Laser Detector With Digital Elevation Readout - Rotary Laser Receiver with Dual Display and Built-In Bubble Level, Compatible with All Red Rotary Lasers - Rod Clamp Included - - Amazon.com
Topcon RL-H5A Horizontal Self-Leveling Rotary Laser Level with LS-80X Receiver 1021200-50 - The Home Depot