--- type: product schema_version: 1 stock_number: "49791-5" canonical_url: "https://www.artisantg.com/49791-5/Serad-SIH24" json_url: "https://www.artisantg.com/49791-5/Serad-SIH24.json" generated_at: "2026-11-07T19:24:30.545Z" last_updated: "2026-10-29T19:05:41.013-05:00" --- # Serad SIH24 24-Digital Inputs Module _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: Serad - Model: SIH24 - Condition: Used and in Excellent Condition - Price: $350.00 USD - Availability: In stock, 5 available - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 2.5 lb, estimated - Shipping dimensions: 12X9X6 in, estimated ## Categories - Industrial Systems Equipment > PLCs and Controllers > I/O Modules > Digital I/O Modules (primary) ## Function Provides 24 digital input channels for sensing dry contact switch closures or open collector/open drain signals at 24 VDC (typical wetting current 2.4 mA, absolute max -0.5 to +24 VDC). Supports digital mode (min pulse width 150 ms) and counter mode (min pulse width 20 ms, max frequency 25 Hz). Interfaces via external switches (K) with 24 V supply (V_S) and 10 kO pull-up resistor (R_PU) for equipment status, alarm, or energy metering applications in building management systems. ## Images - - - -