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How to wire the GateLIFT barrier hardware (electrician guide)

A step-by-step guide for the electrician installing the Ronspot GateLIFT hardware on a car-park barrier.

What you're installing

GateLIFT lets Ronspot open a car-park barrier directly from the Ronspot app so a user with a valid booking taps “open” in the App and the barrier raises. To make that happen, two small devices are fitted at the barrier:

  1. Shelly Pro 2 V1 — a DIN-rail relay that closes a volt-free contact across the barrier's existing “open” command, exactly like pressing the open button.
    Shelly-Pro-2PM-main-image
  2. CSL Router (dual-SIM 4G) — a managed cellular router that gives the Shelly a secure internet connection over the mobile network (no site broadband needed). NOTE: If customer ethernet is available at the barrier, this device is not required



    Dual SIM Router - Red SIMs


You are wiring these two devices in and providing power and a network link. Ronspot handles all the software/onboarding remotely so you don't configure any apps or accounts.

This does not replace or alter the barrier. The Shelly sits alongside the existing controls and injects no voltage into the barrier. Any other access system on the barrier (e.g. an ANPR camera) keeps working exactly as before — see Shared / multi-tenant barriers below.
How it works (in one minute) 
User with a booking → Ronspot app → Ronspot cloud → 4G (mobile network)    → CSL Router → Ethernet (PORT A) → Shelly Pro 2 → volt-free contact    → barrier controller "open" input → barrier opens

An “open” from Ronspot travels down the mobile network to the CSL router, into the Shelly over its Ethernet cable, and the Shelly briefly closes a dry contact (~2 seconds) wired across the barrier's open command. The barrier opens and auto-closes on its own timer, just as it does today.

Before you begin
  • This is mains-adjacent, safety-critical work for a qualified electrician, in line with local wiring regulations. On a barrier that also serves other tenants, it should be done by (or agreed with) the barrier's own approved installer, with the building/site manager's sign-off.
  • Isolate the supply and prove dead before wiring.
  • Have the barrier controller's manual to hand as it is the authority on which terminal is the “open” input and what type it is.
  • Confirm every terminal against the printed labels on the Shelly and the barrier controller before energising. Silkscreen can vary by revision — the label on the unit wins over this guide.

What's in the kit

Item Notes
Shelly Pro 2 V1 2-channel DIN-rail relay, potential-free / dry contacts. Mains powered (110–240 V AC). Supplied without plug or lead.
CSL Router (dual-SIM 4G) Pre-provisioned by CSL with two SIMs on separate networks. Ships with power supply, aerial(s) and a wall bracket. Wi-Fi is disabled.
Ethernet patch lead Links the Shelly to the CSL router. 
Step 1 — Mount the devices

Mount both inside the barrier's control enclosure (or a suitable adjacent lockable enclosure):

  • The Shelly Pro 2 clips onto DIN rail. Keep it dry and within −20 to +40 °C.
  • The CSL router fits on its click-in wall bracket. Position it so the aerial has a clear path to the outside for good signal — avoid burying it inside a metal cabinet if signal is weak.
  • Leave the Ethernet lead accessible between the two.
Step 2 — Set up the CSL router

The router is pre-configured and sealed by CSL — there is nothing to log into.

  1. Fit the aerial(s) (hand-tight).
  2. Connect the supplied power supply (the router runs on low-voltage DC — use the unit provided; do not substitute).
  3. Power on and wait 1–2 minutes for it to register on the mobile network. Confirm the signal/status LEDs show a connection (see the router's quick-start label).
TIP — signal. If the status LEDs indicate poor or no signal, reposition the aerial toward a window/opening or use an external aerial. The router needs a working mobile signal at the barrier location. If signal strength remains an issue a longer antenna will be required. 
Step 3 — Connect the Shelly to the router

Patch the Shelly's LAN (RJ45) port to the CSL router with the Ethernet lead.

IMPORTANT — use PORT A. The CSL router has two Ethernet ports, A and B. The Shelly must be plugged into PORT A. It will not work on port B.
Step 4 — Power the Shelly (mains)

Wire a 110–240 V AC supply to the Shelly's supply terminals:

  • Line → L
  • Neutral → N
  • Protect the supply with an appropriately rated MCB/fuse per local regs.
  • Leave SW1 and SW2 unconnected — the Shelly is triggered over the network, not by a local switch.

Check: on power-up the Shelly's power LED lights, and (from Step 3) it links to the router.

Step 5 — Wire the barrier “open” contact (the key connection)

The barrier is opened by Relay 1's volt-free contact — terminals O1 and I1.

  • Wire O1 and I1 to the barrier controller's “open command” / “remote open” / “key-switch” input, in parallel with the existing open control (button, fob receiver, ANPR relay, intercom, etc.).
  • This is a normally-open, volt-free (dry) contact. It carries no voltage — it simply closes the circuit the same way the open button does. Polarity doesn't matter.
  • When triggered, Ronspot closes it for a momentary pulse (~2 s), then it releases automatically. The pulse length is set by Ronspot — nothing to set on site.
Confirm in the barrier manual that this input is a volt-free trigger. (Example: CAME control boards use a normally-open contact across the “open” terminals — e.g. 2–3 on many boards.) If the controller expects a specific signal or voltage instead, stop and consult Ronspot — do not improvise.
Do not change the barrier controller's settings (DIP switches, jumpers, timers). You are only adding a parallel trigger — leave the board configured as it is for the existing system.
Step 6 — Optional second contact (hold-open / exit / second barrier)

Relay 2 (O2 / I2) is a second independent volt-free contact. Wire it only if required:

  • Hold-open (maintenance). To hold the barrier fully open and later release it, wire O2/I2 to the controller's dedicated hold-open input (labelled hold-open / permanent-open / free-passage / day-mode). Do NOT use the momentary “open” input for this — holding that closed does not reliably keep the barrier up (most controllers still auto-close). Confirm whether that input is maintained or toggle, and tell Ronspot.
  • Exit / second barrier. Wire O2/I2 (momentary) to that barrier's open input, same as Step 5.

Skip this step if only a single “open” is required.

Step 7 — Commission and test (with Ronspot)
  1. Confirm the Shelly's power LED is on and it's connected to the router.
  2. Ronspot confirms the controller shows Online in the admin panel, then sends a Test open.
  3. Confirm: the Shelly relay clicks and its output LED lights for ~2 s, and the barrier opens and auto-closes as normal.
  4. If Step 6 was wired, test that function too.
Shared / multi-tenant barriers

On a barrier shared with other tenants (e.g. an existing ANPR camera system), the two systems run independently and in parallel:

  • Both are just normally-open dry contacts across the same open input — either can open the barrier, neither can block the other.
  • If the Shelly loses power or the mobile link drops, its contact simply sits open — the existing system is completely unaffected, and vice-versa.
  • Because the Shelly contact is potential-free, there's no back-feed between the systems — they stay electrically isolated.
  • One caveat: it's still one physical barrier, so a hold-open raises it for everyone, not just Ronspot users.
Do NOT
  • Apply mains or any voltage to the O1/I1 (or O2/I2) barrier-contact terminals.
  • Plug the Shelly into the router's port B (use port A).
  • Use SW1 / SW2 (leave them unconnected).
  • Reconfigure the barrier controller (DIPs, jumpers, timers) or remove/bypass any safety device (loops, photocells, edges).
  • Substitute the CSL router's power supply.
Troubleshooting
Symptom Check
Controller shows Offline in Ronspot Router powered and showing signal LEDs? Shelly Ethernet in PORT A (not B)? Aerial fitted and getting mobile signal?
Shelly relay clicks but barrier doesn't move O1/I1 landed on the correct open input? Is the barrier controller powered and its existing controls working? Any safety device holding it?
Nothing happens on Test open Shelly power LED on? Ethernet link light on port A? Ask Ronspot to confirm the device is online.
Barrier opens but won't stay up for maintenance Hold-open must be on the controller's dedicated hold-open input (Step 6), not the momentary open input.
Weak/no mobile signal Reposition or fit an external aerial; the router needs signal at the barrier location. 
Sign-off checklist
  • Supply isolated during work; correct MCB/fuse fitted.
  • CSL router powered (supplied PSU), aerial fitted, signal LEDs OK.
  • Shelly Ethernet patched to CSL router PORT A.
  • Shelly L/N wired; power LED on; SW1/SW2 empty.
  • O1/I1 wired to the barrier's volt-free open input, in parallel with existing controls.
  • (If required) O2/I2 wired to the second function.
  • Test open verified: relay clicks + barrier opens + auto-closes.
  • Existing barrier controls/safety devices untouched and working.
Reference
  • Shelly Pro 2 V1 — manufacturer datasheet/user guide (definitive terminal layout and ratings).
  • CSL Router — CSL quick-start/datasheet (definitive LEDs, ports, power).
  • Barrier controller manual — definitive “open input” terminal and type.

Where this guide differs from the manufacturer manuals or the printed terminal labels, the manuals and labels win.

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