.pro_main_title{font-family:Segoe UI,Arial,Helvetica,sans-serif!important;color:#162033!important;font-size:34px!important;line-height:1.22!important;letter-spacing:-.4px!important} .pro_table .line{width:88px!important;height:4px!important;border:0!important;background:linear-gradient(90deg,#e31b23,#223f7f)!important} .pro_table ul li,.pro_table ul li p,.pro_table ul li span{font-family:Segoe UI,Arial,Helvetica,sans-serif!important} .main-more{display:none!important} .products_main .nav-tabs{display:flex!important;flex-wrap:nowrap!important;align-items:flex-end!important;width:100%!important;gap:5px!important}.products_main .nav-tabs>li{float:none!important;flex:1 1 25%!important;width:auto!important;margin:0!important}.products_main .nav-tabs>li:nth-child(1){order:1!important}.products_main .nav-tabs>li:nth-child(2){order:2!important}.products_main .nav-tabs>li:nth-child(3){order:3!important}.products_main .nav-tabs>li:nth-child(4){order:4!important}.products_main .nav-tabs>li>a{display:flex!important;align-items:center!important;justify-content:center!important;width:100%!important;height:54px!important;box-sizing:border-box!important;margin:0!important;padding:0 8px!important;white-space:nowrap!important;font-family:Segoe UI,Arial,Helvetica,sans-serif!important;font-size:14px!important;line-height:1.2!important;font-weight:600!important;text-align:center!important} .products_main .nav-tabs a[href="#about04"]{font-size:0!important;text-align:center!important} .products_main .nav-tabs a[href="#about04"]::after{content:"POPULAR MODELS";display:inline-block;font-family:Segoe UI,Arial,Helvetica,sans-serif;font-size:14px;line-height:1.2;font-weight:600} .pro_main{position:relative!important}#ma-gallery-checks{box-sizing:border-box}@media (min-width:992px){#ma-gallery-checks{position:absolute;left:calc(-71.4286% + 15px);top:540px;width:calc(71.4286% - 30px);margin:0!important}}@media (max-width:991px){#ma-gallery-checks{position:static;width:100%;margin:12px 0 0!important}} SIMATIC S7-1500 · SM 521 DI 16x230 V AC BA 6ES7521-1FH00-0AA0 The 6ES7521-1FH00-0AA0 is a Siemens SIMATIC S7-1500 SM 521 DI 16x230 V AC BA digital input module with 16 digital inputs arranged in groups of four, 230 V AC input voltage, 20 ms input delay and a separately ordered front connector. INPUT VOLTAGE230 V AC INPUT CHANNELS16 DI CHANNEL GROUPING4 CHANNELS INPUT DELAY20 ms input delay MANUFACTURERSiemens CONDITION / WARRANTYOriginal New · One-Year Warranty ISO CERTIFICATIONISO-Certified Product VERIFICATION● Product photos and videos provided after inquiry REQUEST A QUOTE ✉ EMAIL · sales5@mooreplc.com WHATSAPP · +86 153 5940 8275