AMR/AMI products from Mars Company communicate with any meter brand. The low-cost, necessary software to operate the AMR system will interface with any billing system. Reading equipment is compact and durable, and is portable from one vehicle to another. Fixed network equipment in the high-output or low-output versions is available for larger utilities or submetering applications. Systems are frequency-hopping, spread-spectrum-type designed for long battery life and easy field replacement. 800/782-5268; www.marswater.com.