California Proposition 65 Consumer WarningView more
Highlights at a glance
6ES7421-7DH00-0AB0 SM421 isolated digital input module for SIMATIC S7-400 PLC rack system.
Equipped with 16 channels potential isolated digital input to eliminate signal interference.
Supports universal input voltage UC 24 To 60V, built in alarm and diagnosis function.
Hot swappable structure, allowing module replacement without system power off.
Connect with S7-400 CPU via backplane bus to realize stable field signal collection.
Industrial anti-interference design, suitable for harsh industrial automation working environment.
Matches S7-400 CPU, power supply and interface modules to build complete DCS control system.
Brand new original spare part with full factory test, perfect for equipment maintenance and project renovation.
00:00/01:20
About this supplier
1. Company OverviewChengdu Yakaifeng Electronic Technology Co., Ltd. is a professional industrial automation parts supplier. We focus on PLC modules, drives, HMIs, servo systems and supporting accessories for mainstream global brands. With large inventory, strict quality control, fast delivery and professional technical support, we serve worldwide clients with reliable products and trusted one-stop service.2. Competitive AdvantagesMass in-stock inventory ensures fast delivery, no production delay100% full functional testing before shipment for stable qualityFlexible original & high-quality replacement options for all budgetsProfessional tech team offers free model matching and technical consultationStable supply chain to support small orders and bulk wholesaleCost-effective price with perfect after-sale guarantee3. Factory ProfileStandard dust-proof constant temperature warehouse for standardized storageIndependent professional testing workshop for strict product inspectionComplete standardized quality management and operation processExperienced team offers fast pre-sales reply and remote debugging serviceSupport on-site installation and commissioning technical guidance4. Packaging & ShippingProfessional anti-static, shockproof industrial packing for all modulesThick carton or wooden case to eliminate transit damageMultiple shipping methods: DHL, FedEx, UPS, air & sea freightStandard export package for smooth global customs clearanceFull tracking service, real-time shipping progress update5. Service PromiseAll items come with long quality warranty24/7 efficient online customer responseQualified quality problem supported return & exchangeAccurate parameter check and model selection guidanceAim for long-term win-win cooperation with all global partners
