This 24-volt replacement head works with any two-way, spring return to close zone valve in the Honeywell V8043E series. It has a frequency of 50-60 Hz and a maximum ambient temperature of 125 degrees F. The electrical connections are 18” leads located on the same side of the manual lever on a screw terminal block. ---------------------------------------------------------------------------------------------------------------------------------------------- Purchase the replacement head here: https://bit.ly/2tXWawA Shop at Supplyhouse.com: https://www.supplyhouse.com/ Email us: [email protected] Follow Supplyhouse.com! Facebook: / supplyhouse Instagram: / supplyhouse Twitter: / supplyhouse_com