Status-SEM1636-4-to-20m A-Loop-Powered-Dual-Alarm-Relay-Trip-Amplifier-Status-Instruments-SEM1636-This-dual-trip-amplifier-monitors-a-4-to-20m A-loop-&-provides-two-independent-CO-trip-contacts-that-are-set-to-alarm-at-any-point-in-the-4-to-20m A-range-The-unit-requires-no-additional-external-power-as-power-is-provided-by-the-4-to-20m A-loop-The-outputs-from-the-dual-relays-are-independently-configured-for-action-set-point-&-dead-b&-&-six-actions-are-provided-normal-&-inverted-low-