TacklifeDirect via Amazon offers its Tacklife DM01M Advanced Digital Multimeter in Black for $19.97. Coupon code "2FJW8WXK" cuts the price to $16.97. With free shipping, that's $4 under our October mention and the lowest price we've seen. (It's a current low by $10.) It features a backlit LCD, non-contact voltage detection, continuity testing, K-type thermocouple, data hold, flashlight, auto power off, and overload protection. Four AA batteries are required and included. Deal ends December 15.