If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. Honeywell FC-TSDI-1648 Safety Active/Passive Digital Input FTA Introduction The Honeywell FC-TSDI-1648 is a high-performance Safety Active/Passive Digital Input module designed to meet the needs of modern Safety Instrumented Systems (SIS) . With its compact size of 90 x 70 x 58 mm and weighing 0.3 kg , *Your Name: *Your Email: *Your Name: *Vdcode: Submit