NavKar Systems
Combo-CN231 Electronic Door Lock + Power Supply with 3 Remotes, Plug n Play, Easy to Install, DIY
Combo-CN231 Electronic Door Lock + Power Supply with 3 Remotes, Plug n Play, Easy to Install, DIY
Couldn't load pickup availability
The NavKar Systems Combo-CN231 opens your main gate with a remote. It pairs the weatherproof RML-8K electric rim lock with the PSRM-01 remote lock supply and 3 remotes.
Highlights
- Open by remote. Press any of the 3 remotes to open the gate from your car or home.
- Weatherproof RML-8K rim lock. Steel lock body made for outdoor main gates. It mounts on the inside face of a metal gate or door, with a strike on the frame.
- Self-locking latch. The latch locks again by itself as the gate closes.
- Key backup. A 32 mm brass key cylinder with computerised keys opens the gate from outside during a power cut.
- Works with a video door phone. Wire the lock output of a video door phone outdoor station, or a push-button exit switch, to the supply.
- Easy pairing. Press ADD on the supply, then any key on the remote. Pair up to 20 remotes.
In the box
1 x RML-8K lock, 1 x PSRM-01 remote lock supply, 3 remotes, keys and fitting kit. 1-year warranty with bill.
Good to know
- Mount the supply indoors on a dry wall, away from water.
- Mounting on a metal gate may need welding of a plate. Wiring should be done by a trained electrician.
Set up in minutes.
Three steps from the box to your open gate.
Watch it in action.
Wiring diagram.
Follow it exactly, or hand it to your electrician.
Specifications.
Remotes: 3 in the box, up to 20 compatible remotes
Locking: self-locking latch, locks again as the gate closes
Fitting: surface mount on metal gates and doors
Questions, answered.
NavKar Systems designs and supplies electronic locks and gate automation for Indian homes. Every kit is a matched set.
Frequently asked questions
How does an electronic rim lock work?
It fixes on the inside face of a gate or door. The motor retracts the latch when you press a remote or use the app, and the latch locks again when the gate closes. A key cylinder gives a manual backup.
Will it fit my gate?
Rim locks mount on most metal and wooden gates and doors that open inward or outward. Check the lock dimensions and the opening direction listed in the product details.
What happens in a power cut?
Use the key to open the lock by hand. A battery backup power supply can be added to keep the remotes working.
Is a GST invoice provided?
Yes. NavKar Systems provides a GST invoice with every order and delivers across India.
Is technical support available?
Yes. Free technical support is available for installation and setup.
Wiring diagram and manual download
Combo-CN231 is plug and play. The RML-8K rim lock runs on 12 V DC and its two wires go to the LOCK terminals of the PSRM-01 remote lock supply.
Wiring diagram: RML-8K lock with the PSRM-01 Remote Lock Supply

Terminal guide
| Terminal | What to connect |
|---|---|
| LOCK | The two wires of the RML-8K rim lock (12 V DC output) |
| SW | Exit switch: a normally open (NO) push button, optional |
| -VDP+ | Lock output of a video door phone outdoor station: - to -, + to +, optional |
| ADD | Press once, then press any key on a remote to pair it. The LED blinks to confirm |
| AC 230 V | Mains input, 50 Hz. Connect last, after all other wiring is done |
- Switch off mains power before wiring.
- Connect the lock wires to LOCK, the exit switch to SW and the video door phone, if used, to -VDP+.
- Mount the supply indoors on a dry wall, away from water and heat.
- Connect mains last, then pair your remotes with ADD.
Safety first. Complete all wiring before connecting to AC 230 V. Installation by a trained electrician is recommended.
Download the NavKar Electric Rim Lock Catalogue and User Manual (PDF, 21 pages) with installation, wiring, remote pairing and troubleshooting.
Warranty terms: what is covered and what is not
Every NavKar Systems product carries a 1 year warranty from the date of purchase, with the bill. Please read these exclusions before you buy, so there are no surprises later.
- Lock coil: no warranty. The coil inside an electric lock is made to be energised for about one second. If the open button, exit switch or remote key is pressed and held for too long, the coil gets very hot and burns out. Many people press the button for too long, so coil failure is not covered by warranty. Press once, briefly.
- Power supply: no warranty for water damage or physical damage. The power supply is for indoor use only. Water, rain, moisture, a fall, a crack or any other physical damage is not covered.
- All other manufacturing defects are covered for 1 year with the bill.
Choose your RML-8K kit
The NavKar RML-8K weatherproof electric rim lock is sold three ways: the RML-8K lock only, Combo-CN231 (lock + PSRM-01 supply + 3 remotes) and Combo-CN111 (lock + PSWF-01 Wi-Fi supply + 3 remotes). Compare them below and pick the one that fits your gate.
RML-8K Rim Lock
- RML-8K electric rim lock with strike
- Key cylinder, 8 keys, ring, plate and screws
- Connect to your own 12 V DC supply or access-control system
Best for: replacing a lock, or adding it to biometric, RFID or password access control.
View Kit 1Combo-CN231 Electronic Door Lock + Power Supply with 3 Remotes
- RML-8K lock with PSRM-01 remote lock supply
- 3 RM-BR0243 remotes
- Exit switch and video door phone input
- No Wi-Fi or app needed
Best for: simple remote opening of the main gate, with door phone support.
View Kit 2Combo-CN111 Smart Electronic Rim Lock with 3 Remotes and Mobile App
- RML-8K lock with PSWF-01 Wi-Fi lock supply
- 3 remotes
- Smart Life app, Alexa and Google Home
- Share with up to 15 family members
Best for: opening the gate from your phone, even when you are away.
View Kit 3| Kit 1 · Lock only | Kit 2 · Combo-CN231 | Kit 3 · Combo-CN111 | |
|---|---|---|---|
| Price | |||
| RML-8K weatherproof rim lock | Yes | Yes | Yes |
| Lock supply included | No, use your own 12 V DC | Yes, PSRM-01 | Yes, PSWF-01 Wi-Fi |
| Remotes included | No | Yes, 3 | Yes, 3 (up to 20 can be paired) |
| Open by remote | Needs a supply | Yes | Yes |
| Smart Life app, from anywhere | No | No | Yes |
| Alexa and Google Home | No | No | Yes |
| Family members in the app | - | - | Up to 15 |
| Exit switch and video door phone input | Via your own supply | Yes | Yes |
| Needs Wi-Fi or internet | No | No | Only for app and voice. Remotes, switch and key work without internet |
| Key backup in a power cut | Yes | Yes | Yes |
| Warranty | 1 year with bill | 1 year with bill | 1 year with bill |
Which kit should I choose?
Every kit in detail
Kit 1 · RML-8K Rim Lock only
In the box
- 1 x RML-8K electric rim lock with strike
- 1 x key cylinder and 8 keys
- 1 x cylinder ring and 1 x mounting plate
- Fixing screws
Good to know
Silver stainless steel body with a brass key cylinder. The cylinder is 32 mm across, 25 mm long and 105 mm overall with its tail. It runs on 12 V DC, so connect it to your own lock supply or a compatible biometric, RFID or password system.
Remotes, a supply, a video door phone, an exit switch and cable are not included.
Kit 2 · Combo-CN231 Electronic Door Lock + Power Supply with 3 Remotes
In the box
- 1 x RML-8K electric rim lock with strike
- 1 x PSRM-01 remote lock supply
- 3 x RM-BR0243 remotes
- 1 x key cylinder, 8 keys, ring, plate and screws
How it works
The PSRM-01 supply powers the lock at 12 V DC from AC 230 V mains. Press a remote to open the gate. You can also connect a push-button exit switch to SW, or the lock output of a video door phone to the VDP terminals, so the gate opens from inside the house.
Pair a remote in seconds: press ADD once, then press any key on the remote. The LED blinks to confirm. There is no Wi-Fi or app, so it keeps working without internet. Mount the supply indoors, away from water.
Kit 3 · Combo-CN111 Smart Electronic Rim Lock with 3 Remotes and Mobile App
In the box
- 1 x RML-8K electric rim lock with strike
- 1 x PSWF-01 Wi-Fi lock supply
- 3 x remotes
- 1 x key cylinder, 8 keys, ring, plate and screws
How it works
Open the gate from the free Smart Life app on Android or iOS, from anywhere in the world. Add up to 15 family members, each on their own phone, and pair up to 20 remotes. Link the Smart Life account to Alexa or Google Home to open the gate by voice.
Setup takes a few minutes: add the device in Smart Life, press the WIFI pinhole button on the back of the supply, then choose your 2.4 GHz home Wi-Fi. The supply does not work on 5 GHz. Remotes, the exit switch and the key work without internet.
Frequently asked questions about the RML-8K kits
What is the difference between the RML-8K lock only, Combo-CN231 and Combo-CN111?
All three use the same weatherproof RML-8K electric rim lock. Kit 1 is the lock only. Kit 2 adds the PSRM-01 remote lock supply and 3 remotes. Kit 3 adds the PSWF-01 Wi-Fi lock supply and 3 remotes, and lets you open the gate from the Smart Life app, Alexa and Google Home.
Which RML-8K kit should I buy for my main gate?
Buy Kit 1 if you already have a 12 V DC supply or access-control system. Buy Kit 2 for simple remote opening without Wi-Fi. Buy Kit 3 if you want to open the gate from your phone anywhere and share it with family.
Can I open the RML-8K from my phone?
Yes, with Kit 3, the Combo-CN111. The free Smart Life app on Android and iOS opens the gate from anywhere, and Alexa and Google Home can open it by voice. Kit 1 and Kit 2 do not have app control.
Does the RML-8K work without Wi-Fi or internet?
Yes. Kit 1 and Kit 2 do not need Wi-Fi. With Kit 3, only the app and voice control need Wi-Fi. The remotes, the exit switch and the key keep working without internet.
Can I connect a video door phone or an exit switch?
Yes. With Kit 2 and Kit 3, connect a push-button exit switch to SW and the lock output of a video door phone to the VDP terminals of the supply. With Kit 1, connect them to your own lock supply.
What happens to the RML-8K in a power cut?
Open the gate with the key. The brass key cylinder comes with 8 keys, and the lock works again as soon as power returns.
Does the Combo-CN111 work on 5 GHz Wi-Fi?
No. The PSWF-01 Wi-Fi lock supply works on 2.4 GHz Wi-Fi only. If your router shows two networks, choose the 2.4 GHz one.
How many remotes can I pair with the Combo-CN111?
You get 3 remotes in the box and can pair up to 20 remotes with the Wi-Fi lock supply. You can also add up to 15 family members in the app.
Is the RML-8K lock biometric?
No. It is an electric rim lock. It is compatible with biometric, RFID and password access-control systems when connected to a 12 V DC controller or lock supply.
Is there a warranty and a GST invoice?
Yes. Every kit has a 1 year warranty from the date of purchase with the bill, and every NavKar Systems order comes with a GST invoice.
All kits: 1 year warranty from the date of purchase with the bill, GST invoice with every order. A video door phone, exit switch, cable and installation are not included. Installation by a trained electrician is recommended. Pictures are for illustration.
Share
