Check the listing for details. AMERICAN MARINE PINPOINT WIRELESS THERMOMETER. Condition: New. Listed at 24.99 USD. PINPOINT® Wireless Thermometer will measure the temperature at the waterproof probe tip on the remote sensor(s), utilizing a radio wave signal, and will display the temperature in Fº or Cº degrees. PINPOINT® Wireless Thermometer can accept a maximum of 4 remote sensors, thus expanding the monitoring capability to 4 different locations to be displayed on the same PINPOINT® Temperature Display Monitorr (2-AAA batteries are required, but not included, for the meter and 2-AAA are required for each remote sensor). AC operation is not an option here because of the efficient power management of the electronics. Battery life is approximately 2 years. Given proper care, the PINPOINT® Wireless Thermometer should last a lifetime. Remote sensors can transmit temperature signals as far as 100 feet (30 Meters) in optimum conditions. The monitor and remote sensor are powered by two AAA batteries each. Monitor accepts up to four remote temperature sensors. Additional remote temperature sensor Listing and template services provided by inkFrog