UltraPro™ Industrial Alkaline 9V Batteries. The #1 selling industrial battery among top industrial distributors, these batteries are ideal for all high-drain, frequent use devices and are built to exceed performance expectations. Packaged in a re-closable container that helps to organize and protect the batteries from damage and short circuiting. These mercury-free alkaline batteries are guarenteed fresh for 5 years (9V only); see battery for date-code.
Provides a ±2 dB accuracy with 0.1 dB resolution and 40 to 130 dB measuring range, with A and C weighting, AC analog output, the digital sound level meter records Max/Min values over time, utilizes a 0.5” electret condenser microphone and includes (4) AAA batteries and a microphone screen.