Description Accessories Description The Meriam ZM334-4 Charger is a 1 hour charger with 4 NiMH AA batteries and is an accessory for the Meriam M334 Loop Calibrator. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories Meriam 4-20 Milliamp Loop Calibrator M334 Was: Now: $1,042.00 Add To Cart View More