Flir CM78 TRMS Clamp Meter is an industrial grade digital clamp meter with an IR thermometer built-in for accurate TRMS measurements. Flir CM78 TRMS Clamp Meter includes a limited lifetime warranty, bright worklight, connects via Bluetooth to FLIR Tools Mobile, and is manufactured with METERLiNK to add electrical data to thermograms taken on Flir thermal imaging cameras.