# RTU5024 Default Password: What It Is, How to Change It, How to Reset It

> RTU5024 default password is 1234. How to change it, how to factory-reset if forgotten, and why you must change it before adding authorized users. Exact SMS commands included.

Canonical: https://gate-opener.app/blog/rtu5024-default-password/
Last updated: 2026-05-23

The RTU5024 ships with the default password 1234. This guide explains exactly how to change it to a custom four-digit password, how to factory-reset the module if you forgot your custom password, and why you must change the default before adding any authorized users.

## At a glance

The RTU5024 default password is `1234`. Change it immediately after first setup using the SMS command `PWD{old}{new}` — for example `PWD12349872` changes the password from 1234 to 9872. If you forgot a custom password, hold the hardware RESET button while powering on to factory reset back to 1234.

Every RTU5024 ships with the same default password — and every untrained installer leaves it that way. That is a real security problem: anyone who knows the gate's SIM number and the default password can add themselves to the authorized user list. This guide covers the three things you need to know: what the default is, how to change it, and how to reset it if you forget your custom one.

## What is the RTU5024 default password?

Default password: `1234`

Four digits, numeric only. This is the same across every RTU5024 variant — 2G, 3G, 4G LTE, V2, and the rebranded BLIIoT, King Pigeon, and Huobei versions. After a factory reset the password also reverts to 1234.

## How to change the default password

Send the password-change SMS from an authorized phone:

```
PWD{old-password}{new-password}
```

Both halves must be exactly four digits. No spaces, no separators. Example: to change from default `1234` to `9872`:

```
PWD12349872
```

The module replies with `Set password success.` within a minute. Save the new password somewhere safe — there is no remote password recovery, only the hardware reset described below.

## How to factory-reset the RTU5024 (forgot password)

If you can't remember your custom password and no authorized phone is available to set a new one, you must do a hardware factory reset. This wipes all authorized users **and** resets the password back to `1234`.

1. Power off the RTU5024 by disconnecting V+.
2. Locate the small button on the PCB labelled **SET** or **RESET** (varies by firmware revision). It is typically near the SIM slot.
3. Press and hold the button.
4. While holding, reconnect power.
5. Keep holding for 5 seconds after the SIGNAL LED comes on. Release.
6. The module reboots. After 30-60 seconds, the password is back to `1234` and the user table is empty.

You'll need to re-add all authorized users from scratch. See [how to add a phone number to the RTU5024](https://gate-opener.app/blog/how-to-add-phone-number-rtu5024/).

## Why this matters for security

The RTU5024 password protects two operations:

- **Adding or removing authorized phone numbers.** Without the password, an attacker cannot add themselves to your gate's user list.
- **Changing module settings** like relay timing, notifications, and so on.

It does *not* protect the actual gate-open trigger — anyone whose phone number is in the user table can open the gate by calling the SIM, no password required. So the threat model is: an attacker who knows both your gate's SIM number **and** your password could SMS-add themselves to the user list and then open the gate at will. Default `1234` means the second half of that puzzle is solved for free.

Always change the default. Pick a four-digit number that isn't a birthday or PIN you use elsewhere.

## FAQ

### Can I use a 6-digit or alphanumeric password?

No. The RTU5024 is fixed at exactly four numeric digits. If you need a longer password, the [Callny G202 PLUS](https://gate-opener.app/hardware/callny-g202/) accepts six digits.

### Does the password reset also erase the SMS notification configuration?

Yes. A hardware factory reset wipes every customization including authorized users, notification numbers, and relay timing. You'll need to reconfigure everything from scratch.

### Where is the RESET button on the RTU5024?

It's a small tactile button on the PCB, usually within a few centimetres of the SIM slot. On the v1.7 hardware it is labelled `SET`; on v2.0+ it is labelled `RST`. If you can't find it, take a photo of your unit's PCB and email [hello@gate-opener.app](mailto:hello@gate-opener.app) and I'll point it out.

## Related guides

- [RTU5024 setup guide](https://gate-opener.app/blog/rtu5024-setup-guide/)
- [Set up the RTU5024 with the GateOpener app, step by step](https://gate-opener.app/blog/rtu5024-setup-guide/#rtu5024-app-setup)
- [How to add a phone number to the RTU5024](https://gate-opener.app/blog/how-to-add-phone-number-rtu5024/)
- [Every RTU5024 SMS command explained](https://gate-opener.app/blog/rtu5024-sms-commands-explained/)
- [RTU5024 troubleshooting](https://gate-opener.app/blog/rtu5024-troubleshooting/)
- [RTU5024 user manual](https://gate-opener.app/manuals/rtu5024/)

## Related
- [How to Set Up Your RTU5024 GSM Gate Opener](https://gate-opener.app/blog/rtu5024-setup-guide/)
- [RTU5024 SMS Commands: The Complete Reference](https://gate-opener.app/blog/rtu5024-sms-commands-explained/)
- [RTU5024 Troubleshooting: Fix These 7 Common Problems](https://gate-opener.app/blog/rtu5024-troubleshooting/)