Quick view S-TER-N Product Specifications: S-TER-N 18 Volt Sensor Tester, 2 x 9 V Batteries not included. Pocket-sized sensor tester with push-type terminals makes wire connections quick and easy. Allows for fast field checks, troubleshooting and/or demonstration of 10-30... MSRP: Was: Price: $144.00 Add to Cart Compare