Remote Sample Drawing Pump for GX-3R (Pro). The RP-2009 is housed in a rugged plastic case with a quick disconnect fitting for hose attachment, and it is provided with a hose and probe. Standard hose length is 10 feet, and lengths up to 30 feet are available. Then probe is equipped with an internal dust filter and clear body for easy viewing. The RP-3R will operate for up to 5 hours on one AA battery. The pump quickly and firmly snaps over the sensor area of the GX-3R (Pro) gas monitor, and removes easily when sampling is completed. No tools are required.