Ascendo Pte Ltd
- Address: 85, Playfair Road #06-02 Tong Yuan Industrial Building Singapore 368000
- Tel: +65 6741 1218
- Email: sales@ascendo.com.sg
© 2026 Ascendo Pte Ltd. All Rights Reserved. Website By Creative eWorld Pte Ltd.
The RC-180-12 is an industry-standard 3/4″ diameter recessed
magnetic door contact designed for steel doors. It is supplied with
12″ leads and provides a concealed solution for door status monitoring.
| Product parameter | Parameter Description |
|---|---|
| Contact Type | 3/4″ Recessed Magnetic Contact |
| Application | Steel Doors |
| Operating Gap | Up to 1/2″ on steel |
| Loop Type | Closed Loop |
| Electrical Configuration | N/O |
| Reed Form | A |
| Lead | 12″ #22 AWG Leads |
| Color | White / Brown / Gray / Black |
| Max. Initial Contact Resistance | 0.150 Ω |
| Max. Contact Rating | 10 W |
| Max. Switching Voltage | 200 VDC |
| Max. Switching Current | 0.400 A |
| Certifications | UL Listed / ULC Listed |
| Fire Rating | UL 10C Fire Rated |
When the door is closed, the magnet is positioned directly
opposite the recessed reed contact.
The magnetic field keeps the contact in its normal secure state,
allowing the connected security system to recognise that the
door is closed.
Because both components are recessed into the door and frame,
the sensor remains discreet after installation.
When the door opens, the magnet moves away from the recessed
reed contact.
Once the magnet moves outside the operating range, the contact
changes state.
The connected alarm or security panel can then detect that the
door has been opened and respond according to the system
configuration.
The RC-180-12 is designed to be recessed into a steel door and
door frame.
The reed contact is installed in the door frame while the magnet
is installed directly opposite it in the door.
When the door closes, both components align with each other,
allowing the contact to monitor the door position.
The cable from the reed contact is routed through the frame and
connected to the security or alarm panel.
The RC-180 Series can be supplied with additional options depending on
the installation requirements.
The RC-B180-12 is the biased version of the RC-180 recessed magnetic
door contact series. It is designed for recessed installation in steel
doors and provides a concealed solution for door status monitoring.
| Product parameter | Parameter Description |
|---|---|
| Model | RC-B180-12 |
| Version | Biased |
| Contact Type | 3/4″ Recessed Magnetic Contact |
| Application | Steel Doors |
| Lead | 12″ #22 AWG Leads |
| Installation | Recessed |
| Color | White / Brown / Gray / Black |
| Certifications | UL Listed / ULC Listed |
The RC-B180-12 is installed opposite its matching magnet so that
both components align when the door is closed.
The recessed design allows the contact and magnet to remain
largely concealed within the door and frame.
The RC-B180-12 is the biased version within the RC-180 Series.
When the door opens, the magnet moves away from the recessed
contact.
This allows the connected security system to monitor the change
in door position.
The contact is recessed into the steel door frame, while the
matching magnet is installed directly opposite in the door.
Both components should align when the door is closed.
The contact wiring is routed through the frame toward the connected
security or alarm system.
The RC-180 Series can be supplied with additional options depending
on the installation requirements.
© 2026 Ascendo Pte Ltd. All Rights Reserved. Website By Creative eWorld Pte Ltd.
© 2026 Ascendo Pte Ltd. All Rights Reserved. Website By Creative eWorld Pte Ltd.
