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The KB-3MRD is a master monitor that allows the connection of up to three video door stations and 4 additional sub monitors. The Unit features a TFT color monitor, a handset for private communication, a door release button, call-in LED's, tilt control, all-call, door chime volume control, and individual call buttons for other monitors in the system.
FEATURES
- Internal All Call
- Chime and receiver volume control
- Optional selective door release with RY-3DL
- Two-way communication between inside stations
- Video identification and monitoring with 4″ screen
- Instant voice call-in with image
- Built-in illumination for low light conditions
- Selective Call
- Video out to DVR via supplied connector
SPECS
- Communication: Handset (full-duplex)
- Video Display: 4" LDC screen
- Door Release: N/O dry contact, 12V AC, 400mA (use RY-24L for larger contact rating or RY-3DL for 2 or 3 doors)
- Mounting: Surface mount directly to wall or desk mount using MCW-S/A
- Wire Type: 2-cond., mid cap, solid, non-shielded - use Aiphone #871802
- Distance
- Master Station to Door Station: 330'(22AWG) 650'(18AWG
- Master Station to farthest Sub Master Station: 165'(22AWG) 330'(18AWG)
- Power Supply to Master Station: 16'(22AWG) 33'(18AWG)
- Power Supply to Sub Master Station: 16'(22AWG) 33'(18AWG)
Manufacturer Resources
General Line Catalog (Full Catalog)
Product Specs
- Product Type:
- Master Stations
- Series:
- KB Series
- Product Group:
- Electronic Access Controls
- Product Subgroup:
- Intercoms
- Subcategory:
- Video Intercoms
- Commercial/Residential:
- Commercial
- Electronic:
- Yes
- Product Category:
- Electronic Access Controls
- Department:
- Door Hardware
Aiphone KB-3MRD – Frequently Asked Questions
1) How many door stations and sub monitors can the Aiphone KB-3MRD master monitor support?
The KB-3MRD handles up to three video door stations and four additional sub monitors on one system. That makes it the hub station for a small multi-entrance building or a single entrance with monitors at several interior locations. Inside stations can talk to each other two-way, and there are individual call buttons for the other monitors plus an all-call function.
2) Can the KB-3MRD release a door strike directly, or do I need a relay?
There is a built-in door release output, but it is a normally open dry contact rated 12V AC at 400mA. That is enough for a small strike only. If your strike draws more than that, add the RY-24L for the larger contact rating. If you need to release two or three separate doors selectively, use the RY-3DL.
3) What wire do I need to run for an Aiphone KB Series intercom, and how far can it go?
Two-conductor, mid-cap, solid, non-shielded wire, Aiphone #871802. Distance limits: master station to door station 330 ft on 22AWG or 650 ft on 18AWG; master to farthest sub master 165 ft on 22AWG or 330 ft on 18AWG. The power supply run is short either way, 16 ft on 22AWG or 33 ft on 18AWG to either a master or a sub master, so plan on locating the transformer close to the station.
4) Does the KB-3MRD surface mount to the wall or does it need a back box?
It surface mounts directly to the wall. If you want it sitting on a desk or counter instead, use the MCW-S/A desk mount stand.
5) Is the KB-3MRD a handsfree intercom or does it have a handset?
It uses a handset, and the conversation is full-duplex, so both parties can speak at once without cutting each other off. The handset is the reason to pick this station over a handsfree one: the conversation stays private to whoever is holding it, which matters at a leasing office counter or a reception desk in an open lobby.
6) How big is the screen on the KB-3MRD and can I see visitors at night?
Four inch TFT color monitor with tilt control so you can angle the picture to the viewing position. There is built-in illumination for low light conditions, and voice call-in brings the image up instantly when someone presses the door station. Tilt, chime volume, and receiver volume are all adjustable at the station.
7) Can I record what the intercom camera sees?
The KB-3MRD has a video out that feeds a DVR, and the connector for it is supplied with the unit. So you can tie the door station camera into an existing recording setup without buying an adapter separately.
8) Is the Aiphone KB-3MRD suitable for a commercial building or is it a residential doorbell?
It is classed as commercial equipment, and the feature set reflects that: selective call to individual stations, internal all-call for paging every monitor at once, and expansion to three entrances. Typical fits are a small office suite, a leasing office, a clinic front desk, or a multi-tenant entry where the receiving station needs to see and buzz in visitors.
How fast can I get the Aiphone KB-3MRD delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Aiphone KB-3MRD come with a warranty?
Absolutely. The Aiphone KB-3MRD is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Aiphone KB-3MRD?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Aiphone KB-3MRD from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.