Traceable® water-resistant flashing timer is splash-proof, water-resistant timer is ideal for wet labs, wash-down areas, plants, and field use Times from 100 minutes. When zero is reached a bright red LED flashes as a visual sign and an audible alarm sounds for one minute or when manually turned off. Unit also features infinite timeouts. To assure accuracy an individually serial-numbered Traceable® Certificate is provided from our ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Supplied with lanyard, suction cup, magnet, and Velcro™ to affix to surfaces. Supplied with a 2-year replaceable silver-oxide battery. Replacement battery Cat. No. 1039. Features: Water-resistant, audible alarm, flashing red LED when time is up, Infinite timeouts, supplied with lanyard and suction cup. Alarm: 1 Minute audible alarm, bright red LED flashing visual alarm. Size: 3in dia. x 1/2in D. Timing Range: 99 minutes, 59 seconds to zero. Resolution: 1 Second. Accuracy: 0.0001. Maximum Time: 100 Minutes. Channels: 1. Countdown/Countup: Down. Display: 1/2-Inch LCD. Weight: 1-1/2oz. Control Company#: 5036.