Bokosi la kusintha kwa valve, lomwe limatchedwanso Valve Position Monitor kapena kusintha kwa valve kuyenda, ndi chipangizo chomwe chimagwiritsidwa ntchito kuti chizindikire ndikuwongolera malo otsegula ndi otseka a valve. Imagawidwa mumitundu yamakina komanso yoyandikana. chitsanzo chathu ndi Fl-2n, Fl-3n, Fl-4n, Fl-5n. Malire a switch box-proof-proof and chitetezo amatha kukwaniritsa miyezo yapadziko lonse lapansi.
Kusintha kwa malire kumakina kumatha kugawidwanso molunjika, kugubuduza, micro-kuyenda ndi mitundu yophatikizika molingana ndi machitidwe osiyanasiyana. Kusintha kwa malire a valve kumakina nthawi zambiri kumagwiritsa ntchito masiwichi ang'onoang'ono okhala ndi zolumikizira, ndipo mawonekedwe awo osinthira amaphatikizanso kuponyera kowirikiza kawiri (SPDT), single-pole single-throw (SPST), etc.
Masiwichi oyandikira pafupi, omwe amadziwikanso kuti masiwichi oyenda opanda kulumikizana, masiwichi ochepera a maginito olowetsa ma valve nthawi zambiri amagwiritsa ntchito ma switch oyandikira ma elekitirodi okhala ndi zolumikizirana. Mawonekedwe ake osinthira akuphatikizapo single-pole double-throw (SPDT), single-pole single-throw (SPST), etc.