RTU5015 GSM Gate Opener SIM installation guide

Which SIM does the RTU5015 take?

A standard size SIM (2FF), voice-capable, PIN lock off. The RTU5015 is the older sibling of the ubiquitous RTU5024 — same free-call trick (whitelisted number calls, unit rejects unanswered, relay pulses) with SMS control and alarm inputs on top. Minimal credit needed; keep the SIM active per your network's PAYG rules.

Which network?

2G-only hardware. It needs live 2G at the gate, and that's an ever-shorter bet. On a fading-network device, picking the operator with the most service left at the address is what stretches its service life — worth checking Vodafone, O2 and EE rather than guessing.

Fitting the SIM

For the installing engineer, power off:

1. Fit the standard SIM in the board holder.
2. Antenna on before power, outside any metal box.
3. Relay to the operator trigger; pulse or latch to match.

First power-up

Register, then SMS setup: password, whitelist in full international format, alarm numbers if used. Test: whitelisted call rings off, relay clicks, gate moves.

If it won't open

• Rings, no relay: whitelist format — international.
• Unreachable: 2G coverage, SIM status, antenna.
• Alarm SMS not arriving: credit — that side bills normally.

FAQ

RTU5015 vs 5024? Same core trick; the 5024 refined it. Both 2G.

Free to call? Yes — rejected before answering.

Replacement path? A 4G unit (G202/G203 class) when 2G goes in your area.