The Fieldpiece SIP3 is great for quick air register temps. With a 1:1 field of view, the compact design makes taking accurate temperature readings easier, better and faster. The SIP3 has a 1°F/°C resolution and has a -27°F to 230°F temperature range and features Auto-Power Off (APO) to conserve battery life. It also has a rubberized grip, low battery indicator, and is water resistant.