The BW Clip Series of single-gas detectors provides maintenance-free operation: just turn on the device and it runs continuously — no need for sensor and battery replacement or battery charging. That means great reliability and no downtime.
Calibration Stickers: White and Black Calibration Labels, 3/4 x 1 1/2 Inch Adhesive Stickers, 500 Total Labels on a Roll with Write in Date, Next Due and Inspector Initials – Made in the USASierra Services, LLC$21.25$21.25
