Irrigation
RAIN LING RL-CJ100 Decoder Irrigation Controller
The RAIN LING RL-CJ100 is a decoder irrigation controller for up to 100 stations, with HSBUS communication up to 3 km. RAIN LING offers AC and DC versions, an LCD touch screen, mobile-phone control and decoders for soil moisture, rain, flow, lightning protection and valves. The enclosure is ABS with an IP65 rating. It suits larger sites where many valves hang off one two-wire bus. Before ordering, map your zones and cable routes, fix the version and coils, and ask RAIN LING for the wiring manual and a loaded trial.
Lingxing Irrigation Technology (Ningbo) — RAIN LING ↗
Build my procurement briefPlanning zones and cable for 100 stations and 3 km
Station count and bus distance are two different limits. A site can need fewer than 100 zones and still hit the cable limit, or the reverse. Draw a zone schedule and the real cable route before you decide the CJ100 covers the job. A site with only a handful of zones may be better served by the RL-CA08 eight-station controller. HSBUS is RAIN LING's own bus name; ask before mixing it with another brand's decoders.
| Planning step | What to send or request |
|---|---|
| Address map | List each station and the decoder assigned to it. Ask whether valve, sensor and protection modules share one address limit and how spare stations are kept. |
| Cable route | Record the longest run, total cable, branches, junctions and device positions. Get the approved cable, layout and joint rules for your build, and ask whether 3 km means the whole bus or each branch. |
| Running loads | State which zones must run together and what each coil draws. Request the simultaneous-operation limit, supply rating and any master-valve or pump-start output. |
| Reach test | Ask for a trial on your planned length and layout with the chosen devices under load, and keep the command, response and voltage readings. |
Sources [1]
Published specifications
Read each value with its stated conditions, and ask the manufacturer for any limit not listed here.
| Specification | Published value | Meaning / limit |
|---|---|---|
| Product code | RL-CJ100 [1] | Also written CJ100 in the description. Put the AC or DC version and the hardware and firmware revision on the quotation. |
| Station capacity | Up to 100 stations [1] | The number of zones the controller can address. Ask how many can run at once and how decoders count toward the limit. |
| Network | HSBUS; maximum stated distance 3 km [1] | Ask for the cable type, allowed layout, total versus branch length and the load under which 3 km applies. |
| Versions | AC and DC versions available [1] | Request the controller input voltage and supply rating for the version you order. |
| Valve decoder voltage | 24 V AC / 9 V DC [1] | Listed with the valve decoders. Match the coil to the decoder; the controller's own mains input is a separate figure. |
| Enclosure | ABS; IP65; double-door protection described [1] [2] | RAIN LING's rating for the cabinet. Ask how glands and field connections are rated and whether the box may be flooded. |
| User control | LCD touch screen; mobile-phone control supported [1] | Ask which app, which connection (Wi-Fi, cellular or Ethernet), any subscription, and what keeps running offline. |
| Net / gross mass | 3.5 kg / 4.7 kg per piece [1] | Per-piece shipping figures. Mounting load with accessories comes from the installed build. |
| Inner packing size | 38 × 23.5 × 31.5 cm [1] | Box size for shipping. Ask for enclosure dimensions and door-opening clearance for mounting. |
Matching version, decoder and valve coil
RAIN LING offers AC and DC controllers and lists 24 V AC / 9 V DC valve decoders. The page has no controller input rating and no decoder-to-coil table, so get both in writing before anyone wires or powers the system. The coils in question sit on valves such as RAIN LING's EVA/EVD solenoid valves, so name the valve model next to the decoder.
Fix the package
Put controller hardware, firmware, power supply or transformer and decoder part numbers on the quotation. The page mentions an integrated transformer; ask its input, output and capacity and which version includes it.
Name the coil
Record the valve and coil type, voltage, load and whether it is latching or pulse. Check that each 9 V coil works with the decoder you buy, using the coil data sheet.
Get the wiring drawing
Request terminal layouts, cable and joint specifications and installation steps for the controller, decoders, protection and field devices of your build.
Power and protection
Have your electrician follow RAIN LING's supply, earthing, surge and fault instructions. Ask for mains frequency, supply current and the surge rating.
Sensors, flow alarms and fault handling
RAIN LING lists soil-moisture, rain, flow, lightning-protection and solenoid-valve decoders. Decide what each signal should do: stop a zone, block a start, raise an alarm or just display. Then ask RAIN LING for the supported setup and a demonstration. If the site is expected to grow zone by zone, put the RL-CA13 / RL-CA16 modular controllers on the same comparison.
| Decoder type | What to see demonstrated |
|---|---|
| Moisture and rain | Ask for compatible sensor models, the signal type, scaling and how a reading acts on chosen zones. Set your own moisture thresholds with your agronomist. |
| Flow monitoring | Name the meter, signal, scaling and position. Agree whether low or abnormal flow alarms or stops irrigation, how fast, and how it resets. |
| Lightning and diagnostics | Ask which surge parts are supplied, how bus faults are detected and shown, and the withstand level and test report for the protection decoder. |
| Recovery | Show a disconnected device, lost communication and power restored. Record valve states and the restart sequence. |
Mobile app and local programmes
RAIN LING describes an LCD touch screen, independent zone programmes and mobile-app control. The page leaves out the app name, connection hardware, user roles, data storage and any subscription. Ask whether a data plan is included and what works without internet.
Have the supplier show local scheduling first, then the full mobile workflow on your build. Note what can be viewed or changed remotely, how users log in, and which schedules keep running when the phone or network drops. Check clock retention, a stopped programme and power restoration at handover, and confirm at the valve that water actually reached the zone.
Sources [1]
Enclosure, mounting and peripherals
The closed product photo shows the cabinet and cable glands on the underside. A second photo shows the controller wired to several devices and a sample valve and sprinkler. Use the photos to name parts in your enquiry. The 38 × 23.5 × 31.5 cm figure is the inner packing box.
| Feature | What to get for installation |
|---|---|
| Mounting | Ask for enclosure dimensions, weight with components, fixings and the space to open both doors and reach terminals. |
| Environment | RAIN LING lists IP65 and ABS. Request the test document and operating limits for the full assembly with glands, plus UV and temperature limits. |
| Peripherals | List every decoder, sensor, protection unit, valve and connector to be supplied, by code and quantity, on the quotation. |
| Access and service | Agree siting, cable entry, inspection and maintenance using RAIN LING's installation instructions. |
Acceptance trial and handover
Turn your field plan into an acceptance schedule that covers the bus, the electrics and the irrigation result together. Water pressure and flow design stays with whoever owns the hydraulics.
Freeze the package
Record version, firmware, station map, decoders, coils, sensors, power and cable layout. Ask for destination conformity documents for the CJ100 itself.
Run real zones
Demonstrate agreed concurrent loads, the longest routes, local and remote control and sensor responses. Log pressure and flow at the zones apart from bus results.
Close out
Keep results, open items, manuals, any configuration backup, spare-part codes and written warranty and support terms.
Buyer questions
Can all 100 stations run at once?
RAIN LING lists 100 stations as capacity. Ask for the simultaneous limit for your coils and power supply and test it. [1]
Is 24 V AC / 9 V DC the controller input?
Those figures go with the valve decoders. Ask RAIN LING for the controller input voltage of the AC or DC version you buy. [1]
Does 3 km apply to every branch?
The page states a maximum distance without cable or layout terms. Ask for an approved layout and try it on site. [1]
Are the sensors and valve in the photo included?
The photo is an example layout. List each peripheral and quantity on the quotation. [3]
Prepare a model-specific brief
Write your actual conditions below. This local worksheet is not sent, uploaded or saved after reload. Copy or print it before leaving.
Sources
Specifications come from the manufacturer's publications listed below, with the date each was checked.
- Official RL-CJ100 product description and table
manufacturer · Checked 2026-10-11
Model, 100 stations, HSBUS distance, AC/DC versions, decoder types, enclosure, mass and packing data.
- Original official CJ100 closed-enclosure image
manufacturer · Checked 2026-10-11
Shows the RAIN LING cabinet and cable glands.
- Original official CJ100 and peripherals arrangement
manufacturer · Checked 2026-10-11
Example layout of the controller with sensors, decoder units and a valve and sprinkler.
Report a correction through our contact form, quoting RL-CJ100 and the relevant specification.