Pump Controller SHT 227 Float Switch

SHT 227 Pump Controller – The Professional with Float Switch for Dirt, Oil, and True Reliability

When things get really dirty, the SHT 227 from Elektrotechnik Schabus shows what it can do.

Starting from a level of 4 cm (water, heating oil, diesel, lubricating oil, vegetable oil, etc.), the mini float switch activates the pump (up to 3500 VA), triggers a loud alarm, and flashes red. When the level drops, the pump continues to run for an adjustable 0–100 seconds and then switches off cleanly – the alarm stops. 2.5 m cable (extendable up to 50 m), continuously adjustable run-on time, reversible float for inverse function.

The robust professional for pump sumps, cisterns, oil tanks, and everywhere fork sensors would have long given up.

The technology is uncompromisingly practical: real float switch instead of sensitive fork sensor – no false alarms caused by dirt, algae, or oil films. 3500 VA switching capacity for powerful dirty water pumps. Run-on time protects pump and motor. Acoustic and visual alarm directly on the device. LIYY cable flame retardant, oil resistant, temporarily waterproof. Optional mounting bracket (item no. 300787) for fixed installation. Made in Germany – the pump guardian professionals have relied on for years.

The SHT 227 is more than a controller – it is the reliable partner in tough environments. Homeowners with deep sumps, heating installers, farmers, and industry love it because it simply works – even when everything else has long failed. Once plugged in between the socket and the pump, it works maintenance-free for years and keeps your basement, tank, or shaft dry – no matter what gets in.

The SHT 227 at a glance:

• Float switch from 4 cm: Works even with dirt and oil.
• 3500 VA switching capacity: For large dirty water pumps.
• Run-on time 0–100 s: Continuously adjustable – protects the pump.
• Loud alarm + flashing LED: You are notified immediately.
• 2.5 m cable: Extendable up to 50 m (LIYY 2×0.14 mm²).
• Reversible float: Can also be used as empty protection.
• For oil & dirty water: Heating oil, diesel, lubricants – no problem.
• Made in Germany: Highest quality and durability from Schabus.

Typical applications – where the SHT 227 works reliably

• Pump sumps & drainage: Even with heavily polluted water.
• Cisterns & rainwater usage: Automatic emptying or filling.
• Heating oil tanks & lubricant containers: Leak detection + pump operation.
• Agriculture & commerce: Manure, oil-water mixtures, process water.
• Underground garages & construction sites: Heavy-duty continuous use.
• Industry & workshops: Coolants, hydraulic oil, washing facilities.

Scope of delivery

• SHT 227 pump controller with mini float switch
• Mounting material (1 screw, 1 wall plug)
• 1 user manual

Safety instructions

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

Intended use

• The pump controllers SHT 217 | 218 | 227 | 228 detect changes in water levels and monitor pump sumps.
• As soon as the sensor or mini float switch contacts water, a connected pump is switched on.
• The pump run-on time can be set from 0 to 100 seconds using the dial on the device.
• Depending on the device, a visual warning signal appears or an additional acoustic warning sounds.