At a glance
The Callny G202 PLUS is the second-most common GSM gate opener after the RTU5024 family. Manufactured by Callny (also sold as Daniu, LPSECURITY, and G203 in some regions), it uses a different SMS protocol ({pwd}#COMMAND#) with the default password 1234 and supports up to 999 authorized users.
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What the G202 PLUS is
The Callny G202 PLUS is a single-relay GSM gate controller built around the Callny SMS protocol family. It is the second most-popular module on the market after the RTU5024, accounting for roughly 15-20% of installations worldwide.
The same hardware is rebranded and sold under several names: G202 PLUS, G203 (which adds call-only normal users and push alerts), Daniu, and LPSECURITY. The default password is 1234, as on the RTU5024, and you can change it to up to 12 letters and digits. The command syntax is incompatible with the RTU5024: a Callny command starts with the password and a #, then the command and a closing #, for example 1234#ON#.
If you bought a GSM gate module that does not answer RTU5024 commands such as 1234EE, try 1234#CSQ? instead. If it replies with a signal value, you have a Callny.
How it works
Operationally similar to the RTU5024: authorized phones call the SIM number, the modem detects the caller ID, pulses the relay, and hangs up. The differences are entirely in the configuration SMS syntax.
Callny commands are in capitals and use the format {pwd}#{command}#. For example, 1234#TEL+31612345678#001# adds the number as user 001, and the first number you add becomes the super admin. Some older base G202 units reject the + sign and #DEF#: write the number with 00 and the country code (0031612345678) and give an explicit user ID.
The G202 PLUS also has two things the RTU5024 lacks: separate super admin and admin roles, and an alphanumeric password of up to 12 characters.
What's in the box
- Callny G202 PLUS main unit
- GSM/4G antenna
- DC power pigtail (12V)
- Wiring diagram (multilingual)
Quickstart setup
A 15-minute walkthrough to get the G202 PLUS from boxed to working. For the full guide with example SMS responses and error handling, see the G202 PLUS setup guide.
- Insert a SIM with PIN disabled. A nano SIM with calls and SMS.
- Power up. Connect 9-36V DC. Wait for the indicator LEDs to stabilize.
- Add the first user. Send 1234#TEL{phone}#DEF#. The first number you add becomes the super admin.
- Change the default password 1234. Send 1234#PWD{new-password}#PWD{new-password}#, with 4 to 12 letters and digits.
- Wire the relay to your gate motor's manual-open input. Dry-contact pulse, identical to the RTU5024.
- Test. Call the SIM from the authorized number. Relay pulses; call ends within 1-2 seconds.
GateOpener translates all these commands into a clean interface. Add users, change settings and open your gate without remembering a single code.
Download GateOpenerCommon issues and fixes
Command returns no response
The most common cause is a missing password or #. Every Callny command starts with the password and a # and ends with # or ?, for example 1234#ON#, in capitals. Without that the firmware ignores the SMS.
Caller ID detected but relay does not pulse
Check that the number is stored exactly as your phone sends it, with the country code. Ask the module for a stored number with {pwd}#TEL{userID}?, for example 1234#TEL001?, and compare.
Phone number format rejected
Some Callny firmware rejects the + sign. Write the number with 00 and the country code instead: 0031612345678 rather than +31612345678.
Hitting a problem not listed here? The full troubleshooting guide covers the seven most common failure modes in detail.
Frequently asked questions
What is the default password for the G202 PLUS?
How many authorized phone numbers can the G202 PLUS store?
Does the G202 PLUS need a SIM card?
What manufacturers sell the G202 PLUS?
Can I use the G202 PLUS with the GateOpener app?
Buying tips
- Confirm the listing explicitly says 'G202 PLUS' or 'G203' — older non-PLUS G202 units have a smaller user table and slower modem.
- Buy from a seller who provides the multilingual quick guide PDF. The factory English manual is poorly translated and the multilingual quick guide is the only readable reference.
- If you have a choice between the G202 PLUS and the G203 (call-only normal users, push alerts), pick based on need — not price. They are usually within €5 of each other.
Also sold as
Callny G202 PLUS, G203, Daniu G202, LPSECURITY G202 PLUS, and a handful of unbranded AliExpress listings. All use the Callny SMS protocol.
