Mechanical Relay Board for VacuMaid / AstroVac P125, SR42 & MK-X Central Vacuums Charles It seats in place as

It seats in place as a direct replacement

holding debris securely while keeping the exhaust clean

The chrome-plated equivalent is Part #34540C

A fresh pulley grips the belt again for full

Mechanical Relay Board for VacuMaid / AstroVac P125, SR42 & MK-X Central Vacuums Charles It seats in place asThis mechanical relay board (Part #P12595A) is a replacement low voltage control board compatible with VacuMaid and AstroVac central vacuum power units. The relay board energizes the high voltage motor circuit in response to the low voltage start stop signal from your wall inlets and hose handle. It is designed for the P125 power unit and the MK X series. Note that the SR42 unit uses two of these relay boards, so order a pair if you are servicing an