Automatic Refill Sets
The perfect water level.
Fully automatic control.
No more manual refilling. Our ready-to-install refill kits protect your system, conserve water, and save valuable time. Count on robust, maintenance-free industrial-grade technology – straight from the manufacturer.
Installation-ready. Reliable. Efficient.
Technology that delivers: Your advantages at a glance
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Reliable measuring principle: Proven conductive technology – ideal for all conductive media such as water. Operates without moving parts, eliminating common sources of failure.
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Robust & Safe: IP65-rated housing and child-safe low-voltage design ensure maximum safety for household and garden use.
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Continuous operation: Energy-efficient electronics designed for 100% duty cycle – reliable even in continuous operation.
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Easy to use: With adjustable switching points and three clearly visible function LEDs, installation and operation are simple and intuitive.
Three installation-ready packages for your application
Drawing on decades of experience, we’ve developed three perfectly
preconfigured sets for the most common applications.
All sets are pre-assembled and pre-wired for fast and straightforward installation.
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Automatic water level control: Always the optimal fill level for your pool.
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Protection against damage: Prevents dry-run conditions and overload of pumps and filters.
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Optimal water quality: A stable water level helps maintain chemical balance.
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Time saving: No more manual refilling – more time to relax!
Pool: Enjoy a worry-free summer​
Key advantages of this configuration
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False triggering protection: The controller’s integrated time delay effectively compensates for wave motion in the skimmer.
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Easy maintenance: A dedicated on/off switch on the controller saves you from unplugging the unit during filter cleaning.
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Reliable protection: Standard-compliant separation ensures safe isolation of your drinking water system from pool water.
Contains components
The control
The sensor
Level controller NR/RN
Response delay
Pre-assembled
Level probe
20m cable
shed
The actuator
solenoid valve
1/2"
standard
The protection
Particle strainer
1/2"
The safeguard
drinking water Outlet
Drinking water separation
All components come fully pre-wired and pre-assembled.
All necessary mounting accessories (such as screws and wall plugs) are included
– enabling fast and straightforward installation.
Do you have special requirements?
Each set can be individually configured. Explore the available components.
Pond: Keeping the ecosystem in balance​
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​Maintaining water levels: protection against drying out and temperature fluctuations.
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Healthy fish and plants: Stable conditions reduce stress and support growth.
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Improving oxygen levels: creating healthy conditions for all pond life.
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Efficient resource usage: precise replenishment without water loss.
Key advantages of this configuration
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Reliable operation: The integrated debris trap reliably protects the solenoid valve from algae, leaves and other particles in the pond water.
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Weather protection: The fully encapsulated solenoid valve (IP68) ensures maximum durability – even in damp shafts or outdoor installations.
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Flexible installation: The hanging sensor with extended cable can be easily positioned in naturally shaped ponds.
Contains components
The control
The sensor
Level controller NR/RN
Response delay
Pre-assembled
hanging probe
20m cable
potted
The actuator
solenoid valve
1/2"
potted
The protection
Particle strainer
1/2"
The safeguard
drinking water Outlet
Drinking water separation
All components are pre-wired and pre-assembled.
All necessary mounting materials (such as screws and wall plugs) are included
– enabling quick and straightforward installation.
Do you have special requirements?
Each of our sets is customizable. Discover the different components.
Rainwater system: clever use of resources
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Sustainable water management: efficient storage and use of rainwater.
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Reduce costs: lower tap water consumption through intelligent refill control.
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Independence from water prices: less affected by rising costs.
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Protecting the environment: reducing the burden on groundwater and wastewater systems.
Key advantages of this configuration
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Maximum water savings: The suspended probe with long, adjustable electrodes enables precise positioning of the lower switching point.
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Extended valve lifespan: The integrated strainer reliably filters out fine particles flushed from the roof into the cistern.
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Standards-compliant safety: The drinking water separation ensures a secure and legally required disconnection from the public water supply.
Contains components
The control
The sensor
Level controller NR/RN
Pre-assembled
hanging probe
20m cabel
potted
The actuator
solenoid valve
1/2"
standard
The protection
Particle strainer
1/2"
The safeguard
drinking water Outlet
Drinking water separation
All components are pre-wired and pre-assembled.
The necessary mounting material (such as screws & dowels) are included
– enabling quick and straightforward installation.
Do you have special requirements?
Each of our sets is customizable. Discover the different components.
Configure your custom set
Select the components that are technically compatible with your specific project from our modular system.
Standard features for all Refill sets
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Conductive measuring principle: Ideal for electrically conductive media.
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Durable ABS housing: IP65-rated for protection against water jets.
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Three status indicators: Clear display of operating conditions.
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Energy-efficient electronics: Engineered for 100% duty cycle.
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Flexible adjustment: Switching points can be set with precision.
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Child-safe low voltage: Ensures safety for families and households.
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Quick installation: Fast and straightforward assembly.
Options at a glance: Pros & Cons
steering
Level controller NR/RN
Pre-assembled
Level controller NR/RN
Without response delay:
Provides instant response to level changes without any delay.
Ideal for
For calm media and time-critical industrial processes.
Level controller NR/RN
Pre-assembled
Level controller NR/RN VZ
With response delay:
Prevents false switching due to wave motion and protects pump & valve through stable, smooth switching operations.
Ideal for
Pools, ponds and all applications involving agitated surfaces.
sensor
hanging probe
20m cable
shed
Suspended probe
Suspended probe (flexible):
Maximum installation flexibility and easy post-installation adjustment of switching points by repositioning the probe.
Ideal for:
Deep cisterns, tanks and applications with adjustable switching points.
Level probe
20m cable
shed
Level probe
Fixed probe (rigid):
Absolutely stable and fixed electrode positioning for maximum precision and reproducible switching points.
Ideal for:
Confined installation spaces or tanks with high flow rates and surface agitation.
actuator
solenoid valve
1/2"
Solenoid valve
Standard solenoid valve
The proven, cost-efficient solution – often preconfigured for effortless plug-and-play integration with the controller.
Ideal for
Standard applications in dry, sheltered environments.
solenoid valve
1/2"
shed
Solenoid valve (IP68)
Encapsulated solenoid valve
Electronics fully embedded in resin for maximum protection against moisture, splashing water, and demanding environmental conditions (IP68).
Ideal for
Outdoor use, ponds, and damp basement environments.
Further options
The protection
Particle strainer
1/2"
The safeguard
&
Particle strainer
With particle strainer
Essential for protecting the solenoid valve from particles, sand, and organic matter.
Extends the service life and improves the reliability of the entire system.
drinking water
refill
Refill (DIN 1717)
With potable water separation
Standard-compliant valve (DIN EN 1717): Prevents system water
(e.g. from the cistern) from flowing back into the public drinking water supply.
Ideal for
Designed for outdoor, pond and humid basement use.
Ideal for
Legally required when connected to potable water systems.
Switch
On/Off
On/Off switch
With on/off switch
Enables quick system shutdown for maintenance (e.g. filter cleaning)
– no unplugging required.
Ideal for
Pool systems and installations with easy access.
Consistently at the optimal water level.
Why choose our refill sets?
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Proven quality: Engineered for long-lasting, trouble-free performance.
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Maximum reliability: Technology you can depend on – even under continuous operation.
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Flexible integration: Our refill solutions adapt to your system requirements.
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User-friendly: Simple installation and intuitive operation.
Your partner for high-quality and reliable level detection technology.
MMER
Automation
Since 1958
WE SAY THANK YOU FOR ALMOST 70 YEARS OF TRUST.