RNX-101S
Remote control in the house: six active keys, two per aerator — “on” and “off”. It confirms receipt of the command with an LED, sound or vibration.
Quantity: 1
Example configurationAgriculture
Pond aerators switched on from the house, with running and fault signals
An LX link between the house and ponds up to 1.5 km from the farm buildings: a remote control switches the aerators on and off, and transmitters at the ponds send their running and fault states back to the house.
- 3ponds, one aerator each
- 1.5 kmto the farthest pond
- 6feedback states in the house
01 / Investment context
What problem does this configuration solve?
The farm runs three stocked fish ponds up to 1.5 km from the house and farm buildings. Each pond has one aerator, fed from a switchboard on the dike. Today it is switched on and off on site.
On warm summer nights the oxygen level in the water drops, and the aerators then have to be switched on quickly. Driving out to the ponds at three in the morning costs time and sleep, and on a bad night all three have to be visited.
Worse than a delay is a failure nobody knows about. From the house you cannot see whether an aerator is running or has been tripped by its motor protection — and when oxygen is short, an unnoticed failure can cost a pond its entire stock.
The investor’s goal: Switch each aerator on and off from the house, see whether its contactor has switched it on, and learn at once when its protection trips.
How does this configuration work?
Control: the house has a nine-key long-range LX remote control (RNX-101S) with six keys active — “on” and “off” for each of the three aerators. The switchboard at each pond holds an LX receiver (RSX-K02) in bistable two-key mode; its relay drives the coil of the aerator contactor, and the remote control confirms with an LED, sound or vibration that the receiver has taken the command.
Monitoring: in the same switchboard a battery-powered LX transmitter (NBX-102) has two inputs. The first is connected to an auxiliary contact of the contactor and says the aerator is running; the second to the motor protection contact and reports a fault. In the house each pond has its own LX receiver (RSX-K02): relay 1 lights a “running” lamp, relay 2 sets off a shared fault signal unit (SWR-108).
The owner therefore knows not only that the command arrived, but that the contactor actually switched the motor on. A trip of the motor protection is heard at once, at night too, when nobody pressed anything.
02 / Operating principle
From signal to action.
A remote control in the house switches the aerators on, and transmitters at the ponds send their running and fault states back to the house.
Control from the house
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01 / Signal source
RNX-101S Remote in the house, six keysHas a separate “on” and “off” for each of the three aerators.
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02 / Reception
RSX-K02 LX receiver at the pondSends back a confirmation and drives the contactor coil with its relay.
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03 / Action
Aerator Contactor in the switchboard on the dikeThe contactor switches the aerator motor on or off.
The aerators are switched on from the house, with no night-time trips. On a warm night the owner switches them on one after another, and the remote control confirms that each receiver has taken the command.
Status from the switchboard
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01 / Signal source
NBX-102 Status transmitter in the switchboardSends “running” from the contactor and “fault” from the motor protection.
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02 / Reception
RSX-K02 Receiver in the house, one per pondRelay 1 lights the lamp, relay 2 sets off the signal unit.
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03 / Notification
Panel in the house Shared by the three ponds Lamp + Signal unitThe “running” lamp shows that the contactor is on, the signal unit shows a fault.
You can see whether the contactor has switched the aerator on. The lamp is lit by a contact of the contactor, and a protection trip is heard at once, at night too, when nobody pressed anything.
A simplified functional diagram.
03 / Installation components
Devices in this configuration
An example selection — the number of devices depends on the site.
RSX-K02
LX receiver in the switchboard at the pond, in bistable two-key mode: one key switches its relay on, the other off. The relay drives the coil of the aerator contactor.
Quantity: 3
NBX-102
Battery-powered LX transmitter in the switchboard at the pond. Input 1: contactor auxiliary contact (“running”), input 2: motor protection contact (“fault”).
Quantity: 3
RSX-K02
LX receiver in the house, one per pond: relay 1 lights the “running” lamp, relay 2 sets off the fault signal unit. It sends a confirmation back to the transmitter.
Quantity: 3
SWR-108
Shared fault signal unit in the house, with volume control: a protection trip on any of the three aerators sets it off.
Quantity: 1
Installation component
12 V DC indicator lamp
“Running” lamp on a shared panel in the house, one per aerator; it is lit by the relay of that pond’s receiver.
Quantity: 3
Installation component
12 V DC power supply
Powers the receivers: one in each switchboard at the ponds and one in the house for the three receivers, the lamps and the signal unit.
Quantity: 4
Catalogue figures describe a device under stated conditions, usually in open terrain, and are not a guaranteed range in every installation. Device quantities in the examples are indicative.
04 / Value for the investor
What does this solution give you?
Actual state, not just radio
The lamp in the house is lit by a contact of the contactor, so it shows that the aerator has been switched on — not just that the command arrived.
No night-time trips
On a warm night the aerators are switched on from the house, one after another, instead of driving along the dikes of three ponds up to 1.5 km away.
Faults heard at once
A motor protection trip sets off the signal unit in the house even when nobody pressed anything — before a lack of oxygen threatens the stock.
05 / Before installation
What needs to be settled for a similar investment?
Before devices are chosen, what matters is the site’s conditions and how the system ties into the final installation.
Requirements to verify
- A radio test from the house to each pond, across dikes and tree lines — the LX range of up to 4–5 km applies to open ground.
- 12 V DC power and sealed switchboard enclosures by the water; in a metal enclosure the antennas of the receiver and transmitter are brought outside.
- Contactors with a 24 V coil or an interposing relay — the receiver relay is rated 1 A / 24 V DC or 0.5 A / 125 V AC.
- Normally closed auxiliary contacts on the contactor and the motor circuit breaker for the status transmitter’s inputs, which react to an opened circuit (NC).
- The system does not measure oxygen in the water or check the aerator itself: “running” means the contactor has switched the motor on. Whether to switch an aerator on is decided by the fish farmer or a separate oxygen meter.
Example configuration — it needs a technical selection for your site.
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