https://www.ebay.com/sch/i.html?_nkw=Bath+Control+Len+Gordon+Mm+230V+On+Off+W+Delay+Wall+Mount&_sacat=0&_dmd=2

Bath Control, Len Gordon Mm, 230V, On/Off W/Delay, Wall Mount

Regular price
$173.00
Sale price
$115.00

Tub Controls Designed for fiberglass or cultured marble tubs with a wall thickness of up to 1". Prevents activation of pump unless water in tub is above a predetermined safe level. Must be used with the Len Gordon MM series air switch or the ETD motor mount switch