Carlo Gavazzi RM1D DC Switching Solid State Relays offer a switching frequency up to 1000Hz and 4VDC to 32VDC control voltage range. RM1D relays feature an LED that indicates control voltage presence on the SSR and fast response times to switch ON and OFF. The fully solid state ensures a trouble-free operation over a high number of switching cycles. Carlo Gavazzi RM1D DC Switching Solid State Relays are an ideal solution for when switching response times from ON and OFF are critical to the applications.