{"product_id":"honeywell-900g01-0202-contact-closure-digital-input-module","title":"Honeywell 900G01-0202 Contact Closure Digital Input Module","description":"\u003ch2\u003e\u003cstrong\u003eHoneywell 900G01-0202 Contact Closure Digital Input Module\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #d35400;\"\u003e900G01-0202\u003c\/strong\u003e is a self-powered 16-channel Digital Input module for the \u003cstrong\u003eHoneywell HC900\u003c\/strong\u003e controller. It is designed to interface directly with dry contacts, switches, and relays without requiring external field power.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Honeywell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e \u003cstrong style=\"color: #d35400;\"\u003e900G01-0202\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Digital Input (DI) Module, Contact Closure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs per Module:\u003c\/strong\u003e 16 Channels (Single-Ended)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Type:\u003c\/strong\u003e Dry Contact (Voltage-Free)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Supplied by Module:\u003c\/strong\u003e 15 VDC Normal (to External Contact)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Contact Resistance:\u003c\/strong\u003e 1000 Ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitching Current:\u003c\/strong\u003e 2.6 mA Nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOFF to ON Response Time:\u003c\/strong\u003e 4 ms Maximum (excluding controller scan \u0026amp; backplane transmission)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eON to OFF Response Time:\u003c\/strong\u003e 6 ms Maximum (excluding controller scan \u0026amp; backplane transmission)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanic Isolation:\u003c\/strong\u003e Between Field Wiring (Input\/Output) and Module Logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Terminals:\u003c\/strong\u003e 4 Terminals to Simplify Field Wiring Groups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Status Indicator:\u003c\/strong\u003e Green LED per Channel (Illuminates when input circuit is closed\/ON)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Status LED:\u003c\/strong\u003e Green Blinking (Active Scan), Red (Fault\/Diagnostic)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogic Inversion:\u003c\/strong\u003e Supported in Controller Software\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to +60°C (Standard HC900 Range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e Powered from HC900 Backplane\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eModule Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelf-powered design provides 15VDC to the field contact, eliminating the need for separate external power supplies.\u003c\/li\u003e\n\u003cli\u003eAccepts dry contacts (e.g., switch, relay, pushbutton) with resistance up to 1000Ω.\u003c\/li\u003e\n\u003cli\u003eFast response times (4ms ON, 6ms OFF) ensure accurate detection of contact state changes.\u003c\/li\u003e\n\u003cli\u003eFour common terminals allow flexible grouping of field wiring for different signal sources.\u003c\/li\u003e\n\u003cli\u003eIndividual green LEDs per channel provide immediate visual feedback for contact closure status.\u003c\/li\u003e\n\u003cli\u003eGalvanic isolation between field wiring and module logic protects the controller from electrical noise and transients.\u003c\/li\u003e\n\u003cli\u003eIdeal for monitoring status of mechanical switches, float switches, and relay contacts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Wiring Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall in a compatible Honeywell HC900 rack. The module receives power from the backplane.\u003c\/li\u003e\n\u003cli\u003eConnect one side of the dry contact to the desired input terminal on the module.\u003c\/li\u003e\n\u003cli\u003eConnect the other side of the dry contact to one of the four common terminals.\u003c\/li\u003e\n\u003cli\u003eMultiple contacts can share a common terminal to reduce wiring complexity.\u003c\/li\u003e\n\u003cli\u003eEnsure the total contact resistance (including wire resistance) does not exceed 1000Ω.\u003c\/li\u003e\n\u003cli\u003eFor long wire runs, consider wire gauge to minimize loop resistance and ensure reliable operation.\u003c\/li\u003e\n\u003cli\u003eThe module is for voltage-free contacts only. Do not connect external voltage sources to the inputs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMonitoring manual pushbuttons, selector switches, and key switches.\u003c\/li\u003e\n\u003cli\u003eReading status from relay contacts, pressure switches, and float switches.\u003c\/li\u003e\n\u003cli\u003eInterfacing with safety door switches and mechanical limit switches.\u003c\/li\u003e\n\u003cli\u003eGeneral-purpose status input for alarm and interlock circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor wiring schematics or to order the \u003cstrong\u003eHoneywell 900G01-0202\u003c\/strong\u003e, contact our technical support.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact:\u003c\/strong\u003e Email \u003ca href=\"mailto:sales@nex-auto.com\"\u003e\u003cstrong\u003esales@nex-auto.com\u003c\/strong\u003e\u003c\/a\u003e or WhatsApp \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e\u003cstrong\u003e+86 153 9242 9628\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePartner:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.nex-auto.com\/\"\u003e\u003cstrong\u003eNexAuto Technology Limited\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e© 2026 \u003ca href=\"https:\/\/www.autonexcontrol.com\/\"\u003e\u003cstrong\u003eAutoNex Controls Limited\u003c\/strong\u003e\u003c\/a\u003e. All rights reserved.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45621626765473,"sku":"900G01-0202","price":296.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/900G01-0202.jpg?v=1767598662","url":"https:\/\/www.autonexcontrol.com\/uk\/products\/honeywell-900g01-0202-contact-closure-digital-input-module","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}