ECmallUS via Amazon offers the Meterk LCD Digital Sound Level Meter for $20.97. Coupon code "7XGIPQE6" cuts that to $14.68. Plus, Prime members bag free shipping. That's tied with our mention from last month and the lowest price we could find by a buck. It features a backlit LCD, electronic condenser microphone with sponge windscreen, 30 to 130 dBA measuring range, data hold, and auto shut-off. Deal ends January 29.