LL Series Liquid Level Controllers

The LL4 has one normally open and one normally closed contact (form C) rated at 10A resistive. It is suitable for single level service with high or low alarm; or differential service pump up or pump down. It is housed in an ABS plastic enclosure with exposed terminals, or mounted in a NEMA 1 or NEMA 4X enclosure.
The LL& and LL7H have the added feature of an auxiliary pair of normally open contacts for use with an annunciator or other device. The LL7 version is suitable for
The LLW has several features not normally found in liquid level controllers. It is housed in a self-contained
NEMA1 plug-in enclosure. The base is mounted and wired and then the cover containing the electronics is plugged in and secured with two screws. It has two LED’s which indicate power on and relay status. A switch allows manual or automatic operation of the controlled device. It has an auxiliary set of Form C contacts. Fail-safe operation can be achieved by field selection of “Direct” or “Inverse” operation.