water tank water tower fish tank automatic level controller water pump level controlling switch to control the on or off of pump

this product adopts integrated circuit and combines the liquid level grading upgrade of the upper and lower sump of high-rise buildings. it has the functions of joint control of upper and lower sump, drainage and water shortage protection, which can realize water supply and drainage of water tank and effectively prevent it. the water level in the pool is too high or the idling is damaged. the effect is ok, this is afraid of scale, the scale is not reliable, and the price is