Motorised Lock vs Electronic Rim Lock: What Is the Difference?
Short answer: an electronic rim lock like the RML-8K releases its latch with a short pulse of 12 V power and relocks by itself when the gate shuts; it is listed as weatherproof and suits outdoor metal main gates (₹3,799 lock only, kits from ₹3,049). A motorised lock uses a small motor to drive its bolt, and the RFID models on our store come with a card reader and remote built into the package; they suit main doors, wooden doors and doors with a door closer (₹2,499 to ₹5,000). Pick the rim lock for an open-air gate, and a motorised lock for a door where you want cards and a quiet, solid bolt.
Both are "electronic door locks" in everyday speech, so buyers often mix them up. Here is how they differ, using only what each product listing states, with live prices that include GST.
What is an electronic rim lock?
An electronic rim lock is surface-mounted on the inside face of the gate, with its strike on the frame. Inside is an electric release. When the lock gets a brief 12 V pulse from a supply, remote receiver or reader, the latch pulls back and the gate can be pushed open. When the gate closes, the self-locking latch catches the strike again.
The RML-8K on our store is listed as a weatherproof 12 V DC rim lock for house main metal gates and doors, with a 32 mm brass key cylinder and 8 keys. The lock-only listing has no supply or remotes, so most people buy it in a kit. The kit listings stress one point: give the lock only a short pulse (the Wi-Fi kits use a 1-second inching timer) and never leave it powered.
What is a motorised lock?
A motorised lock moves its bolt with a motor and a control board instead of a simple electric release. The listings on our store describe several features you do not get on a plain rim lock:
- Built-in access options. The RFMT-22RM supports up to 2,000 user cards or tags and opens from outside by key, card or remote. Its package includes a controller remote, a wireless remote, a card reader, manager and user cards, and 3 keys.
- A knob inside. The RFMT-22RM opens from inside by turning a button; the S-ELCR2 and RFMT-1RM by a rotary knob or remote; the MT-2C by an exit knob.
- Auto-locking. The MT-2C locks automatically when the door closes, and its listing says the locking tongue does not touch the lock while closing, so there is no collision and no noise. The S-ELCR2 locks again automatically within 9 seconds if the door is not opened.
- Door closer friendly. The RFMT-22RM listing says it is specifically designed for doors fitted with door closers.
The trade-off is that a motorised lock is a more complex device, and the listings describe it mainly for doors rather than open-air gates. The MT-2C listing calls it perfect for wooden door security, and the Combo-CN91 listing describes its motorised lock as perfect for indoor use.
Side-by-side comparison (NavKar Systems, 27 October 2026)
| Feature | RML-8K rim lock | RFMT-22RM motorised | Secureye S-ELCR2 motorised | MT-2C motorised |
|---|---|---|---|---|
| Type | Electric rim lock, self-locking latch | Motorised rim lock with RFID | RFID motorised lock, dual cylinder | Motorised double cylinder rim lock |
| Power | 12 V DC, short pulse only | 12 to 18 V DC, 100 mA | 12 V DC, 350 mA working, 25 mA static | 12 V DC |
| Opens from outside by | Key; remote, app or reader through a kit | Key, card or remote | Key, card or remote | Key; remote through an external kit |
| Opens from inside by | Switch, remote or app through a kit | Turning a button | Rotary knob or remote | Exit knob |
| Cards | Only with a reader kit | Up to 2,000 cards or tags | Card | Not stated |
| Other stated specs | Weatherproof, 32 mm brass cylinder, 8 keys | 130 x 98 x 41 mm, made for doors with door closers | 20 mm deadbolt, 500,000 cycles, 2.1 kg | Stainless steel body, auto-lock, indicator light |
| Price | ₹3,799 | ₹4,299 | ₹5,000 | ₹2,499 |
Other motorised options: the RFMT-1RM (₹3,999) carries the same specification list as the S-ELCR2 in its listing, and the MT-1C (₹2,499) is a 12 V motorised lock listed for metal or wooden doors.
Ready kits for each type
| Kit | Lock type | What comes with it | Price |
|---|---|---|---|
| Combo-CN59 | Electronic rim lock (RML-8K) | Receiver, 12 V adapter, 3 remotes | ₹3,049 |
| Combo-CN111 | Electronic rim lock (RML-8K) | PSWF-01 Wi-Fi supply, 3 remotes, Smart Life app | ₹5,499 |
| Combo-CN60 | Motorised (MT-2C) | 3 remotes, Wi-Fi controller for app, Alexa and Google Home | ₹5,450 |
| Combo-CN91 | Motorised, stainless steel | Wi-Fi controller, 3 remotes, 12 V 3 A supply | ₹5,450 |
| Combo-CN122 | Motorised, stainless steel | PCB receiver, 2 remotes | ₹5,499 |
Choose an electronic rim lock if…
- The lock goes on an outdoor metal main gate that takes rain and sun. The RML-8K is listed as weatherproof.
- You want the widest choice of ways to open: remote, Wi-Fi app, push buttons on every floor, video door phone, card or fingerprint panel. Our store has kits for each.
- You want the lowest entry price for remote opening: Combo-CN59 at ₹3,049.
- You may later add a video door phone or exit switch; supplies like the PSRM-01 and PSWF-01 have inputs for both.
Choose a motorised lock if…
- The lock goes on a main door, wooden door or office door rather than an open gate.
- The door has a door closer: the RFMT-22RM is designed for that.
- You want RFID cards and a remote in one box, without a separate reader: the RFMT-22RM supports up to 2,000 cards or tags.
- You want a knob to open from inside and quiet closing, as the MT-2C listing describes.
- You want app control on a wooden door: Combo-CN60 (₹5,450) adds remotes and a Wi-Fi controller to the MT-2C.
If you want fingerprint and PIN on a wooden door with no wiring at all, a battery smart lock may suit you better; see fingerprint lock vs smart lock for wooden doors. For every rim lock kit and price, read the electronic rim lock price guide, and for the RML-8K in detail, the RML-8K guide. Browse electronic rim locks and main gate and metal door locks. Delivery across India is free and orders are prepaid.
FAQ
Is a motorised lock better than an electronic rim lock?
Neither is better everywhere. The RML-8K electronic rim lock is listed as weatherproof for outdoor metal gates; motorised locks such as the RFMT-22RM and MT-2C are described for doors, with cards, knobs and quiet auto-locking.
Can a motorised lock be used on a wooden door?
Yes. The MT-2C listing calls it perfect for wooden door security, and the RFMT-22RM listing says it fits metal, wooden and stainless steel doors.
Which one works in a power cut?
Both open with a key from outside. The motorised models also have a knob or button inside: the MT-2C has an exit knob and the S-ELCR2 a rotary knob.
Does a motorised lock need a separate power supply?
It needs 12 V DC. The RFMT-22RM listing gives 12 to 18 V DC; kits such as Combo-CN91 include a 12 V 3 A supply, while lock-only listings do not.
Can I open a motorised lock with my phone?
Yes, with a Wi-Fi kit. Combo-CN60 (₹5,450) and Combo-CN91 (₹5,450) both add a Wi-Fi controller and 3 remotes to a motorised lock.
Prices are NavKar Systems website prices on 27 October 2026, inclusive of GST, and may change.
