Auto- control.The max control distance:1000M.  FUNCTION INTRODUCE 1.Auto-control function introduction When there is lack of water or the pressure is lower than the set value in upper pool: auto pump water;When the water os full or the pressure is up to the set value in upper pool: auto stop pumping;Multi-function: through different connection ways and parts to get the different function, like water supply, waste drainage, pipe pressureincrease, pipe pressure stabilize etc. 2.Intelligentized-control function introductionWater-lack protection in lower pool:when there is lack of water in lower pool or pipe water is not supplied while it is pumping, the controller will auto switch off in 10 seconds. And when the water is full in lower pool or pipe water is re-supplied, the controller will auto reset for pumping,(if the lower pool is No-load protected, it will auto check every 30 minutes and will repump immediately once htere is water.)Over-load protection:this controller has the feature of anti-time limit over load protection.(it means the more over-load current is over than the set value, the faster is the over-load protection)Lack-phase protection:the controller will switch off in 4 seconds when there is any phase of the 3 is off or lack3.Combine the pressure and water-level control together, the user only needs to set switch to the pressure or water-level (as the below legend) to get the pressure or water-level control function.4.Failure hint:if the over-load light on, the current screen shows over-load current;if the phase-lack light on, the current screen shows lack of phase:011-phase A loss, 101 phase B loss, 110 phase close.  MAIN TECHNICAL INDEX

1.Static power is lower than 3.5W. Active power is lower than 4.5W.

2. Default out of factory:No-load is 000, auto-reset time is 30 minutes after no-load protection Over-load is set according to the max. power, like 3 phase 4KW IS SET 8A, single phase 2.2KW is 11A.

3.The max. control diatance: 1000M.

4. Protect function anti-time-extending feature

Overload Time	1.2 times	1.5times	2times	3times	5times
Protect time	50seconds	30 seconds	15seconds	6seconds	1seconds

BB-B1-4000C Pump Controller