Pump Controller SHT 228 with Float Switch

SHT 228 Pump Controller – The Completely Silent Professional with Float Switch

Powerful, robust, and guaranteed noiseless – the SHT 228 from Elektrotechnik Schabus is the quiet version of the proven SHT 227. From a level height of 4 cm (water, heating oil, diesel, lubricating oil …), the mini float switch activates the pump (up to 3500 VA), provides an optical signal only, and allows it to continue running for an adjustable 0–100 seconds after drying.

No beeping – just a red LED. 2.5 m cable (extendable up to 50 m), reversible float for inverted operation. Ideal for basements under living areas, holiday homes, night-time use, or anywhere the pump should operate without waking anyone.

The technology is identical to the SHT 227 – just without sound: a genuine float switch for dirty water and oil, 3500 VA for powerful pumps, continuously adjustable overrun time that protects motor and pump. No false alarms from dirt or oil films. LIYY cable is flame-retardant, oil-resistant, and temporarily waterproof. Optional mounting bracket (Art. No. 300787) for fixed installation. Made in Germany – the silent professional that keeps working when others already fail.

The SHT 228 is the smart basement guardian for quiet nights and heavy-duty performance. Homeowners with bedrooms above the boiler room, holiday home owners, and anyone who wants to automatically pump away dirty water or oil – but quietly – love it. Once plugged in, it operates completely silently and keeps sump, cistern, or tank reliably drained.

The SHT 228 at a glance:

• Completely silent: No beeping – optical LED indicator only.
• Float switch from 4 cm: Works with dirt, oil, diesel.
• Switching capacity 3500 VA: For powerful sewage pumps.
• Overrun time 0–100 s: Continuously adjustable – protects the pump.
• 2.5 m cable: Extendable up to 50 m (LIYY 2×0.14 mm²).
• Reversible float: Usable as dry-run protection as well.
• For oil & waste water: Heating oil, lubricants – no problem.
• Made in Germany: Top quality and durability from Schabus.

Typical Applications – Where Quiet and Power Are Needed

• Basements under living/sleeping areas: No nighttime beeping.
• Holiday & weekend homes: Protection without constant noise.
• Cisterns & rainwater systems: Quiet automatic drainage.
• Heating oil tank rooms: Silent oil and wastewater pumping.
• Residential and multi-family houses: Neighbors stay undisturbed.
• Industry & commerce near housing: 24/7 operation without noise pollution.

Scope of Delivery

• SHT 228 pump controller with mini float switch
• Mounting hardware (1 screw, 1 wall plug)
• User manual

Safety Instructions

• Before installing or operating the device, read the user manual carefully.
• Packaging material is not a toy. Keep it away from children.
• Do not open the device; it contains no parts serviceable by the user.

Intended Use

• The SHT 217 | 218 | 227 | 228 pump controllers are designed to detect changes in water level and monitor pump shafts.
• As soon as the sensor or mini float switch comes into contact with water, a connected pump is activated.
• Using the adjustment dial on the device, the pump overrun time can be set from 0 to 100 seconds.
• Depending on the device, an optical warning signal appears or an additional acoustic alarm sounds.