Probe Locator Product Type Probe Locator Display Size 3 1/2 in Battery Type Alkaline Li-ion Number of Batteries Included 0 Compatible Threader Grainger Part Number 48VG72 Compatible Manufacturer Model Number DPS16-R30 Cordless Tool Kit Contents (3) Batteries Bare Tool Features LCD and Audible/Visual Alerts Includes (2) AAA Batteries for Transmitter Maximum Operating Temperature 140 Degrees F Minimum Operating Temperature 14 Degrees F