Simplex 2080-9070 Maintenance SwitchReleasing systems require maintenance disconnect switches and often require abort switches. These abort and maintenance switches are clearly labeled and combine easy operation with rugged construction for high integrity operation. Note: Single gang size; includes 3 position contact block housing with 1 contact block installed; disabled position opens connection to output and places a 16. 2 k resistor across the input circuit; resistor is removable if