Each detector has a built-in pump and comes with A-CALTM firmware, flex probe with stainless tip (FP-821), stainless steel probe (SSP-821), one straight hose with quick-connect fitting (SQ-742), pack of water-block filters (WF-305), set of NiMH batteries (NM-524) with plug-in charger (USB-001), carrying case (IC-501), rubber boot (RB-501), shoulder strap (SS-501) and operating manual.