Isolation of short circuit, automatic restore when short circuit is cleared. Din-Rail mount, Surface mount. LED status indication. Standard: EN 54-17:2005. LPCB Approved. Operating Voltage: Loop 24VDC (16VDC - 28VDC). Standby Current? 0.15mA. Action Current? 1.5mA. Capacity: Maximum 128 isolators per loop. Maximun 70 devices between two isolators. Operating Environment: 0? - +49?; ? 95%, non-condensing. Dimension: 78 x 45.3 x 28.5 mm.