Wireless Vacuum Gauge - Confidently perform evacuations with a reliable, leak-proof seal. Reversible angled coupler and new cylindrical design are easier to fit into tight spaces. There are three ways to use: Stand Alone, Job Link� System App & SMAN� Manifold Screen. There are three ways to view: Rate, Bar Graph & Rate Meter. IP54-rated weather-resistant. Rugged over-molded construction for extreme impact resistance. A2L Compatible.