Aleph International DC1561 Direct Current Contactor

The Aleph International DC1561 is a compact surface‑mount magnetic door sensor (reed switch) sold as a DC contact for security and access‑control systems. It is a Form A (normally closed) SPST switch rated up to 30 VDC and 0.2 A (5 W), with a nominal sensing gap of 1 inch (25.4 mm) between the sensor and its mate. The device measures about 1 3/32 inches long by 1/2 inch wide by 1/4 inch high and provides 12 inches of wire leads (UL‑1007 AWG #22) for easy wiring, with mounting options including self‑adhesive surface mounting or screw mounting. Variants in the DC1561 family, such as the DC1561W, are described as surface‑mount magnetic contacts with 12‑inch leads, and catalogs note features like hermetically sealed switches and high‑grade magnets for enhanced reliability.