(s#off-fr)  Very clean. All tested and works with 9v battery. (Priced for One piece only)   The FLUKE BIOMEDICAL DPM4-2H Parameter Tester is a high-quality medical device made by the reputable brand Fluke. This product is specifically designed for use in healthcare settings and laboratories, providing accurate and reliable results.  Made in the United States, this tester is a trusted option for those in the medical and lab equipment industry.