Verkada AC42 door controller
Previous-generation four-door controller. Still supported, and its door licences can still be renewed.
End-of-sale 16 July 2026. Verkada supports the AC42 until 6 August 2036, and licences for it can still be bought and renewed. Verkada names the AC43 as the replacement, and licence value can move to new hardware when you upgrade.
AC42 at a glance
| AC42 | |
|---|---|
| Model and variants | AC42-HW |
| Doors / readers | 4 doors, 1 reader port per door (Verkada/RS-485 or Wiegand), each <250mA |
| Inputs | Per door: 2x REX + 1x DPI (dry); 2x AUX dry inputs; 4x contact sensors |
| Outputs | Wet relays 12V 700mA or 24V 350mA; dry relays 24VDC @ 2A; 2x AUX dry relays; 1x 12V @ 250mA AUX power |
| Power | 100-240VAC 50/60Hz, 1.5A max; 60W max |
| Battery backup | ACC-BAT-4AH 12V SLA |
| Network | Ethernet 10/100 Mbps RJ-45; USB 2.0 |
| Operating temp | 0 to 50°C, 5-90% humidity |
| Licence | One door licence per door connected, up to four. |
| Warranty | 10 years |
From Verkada’s datasheets: help centre, door controller ac42 datasheet (PDF), product page. Checked 17 October 2026.
How we install the AC42
Door hardware, cabling, power and the fire alarm interface are all done by our own electricians, so one contractor is responsible for the door working. We set up doors, schedules and credentials in Command and train whoever manages them.
Other access control models: AC12, AC43, AC62, AX11, AD34, AD64, AF64. See all on Verkada access control or the model guide.
AC42 questions
What licence does the AC42 need?
Is the AC42 still supported?
Can you replace my AC42s?
Planning to replace your AC42s?
Free survey and a written design with an itemised quote. Call or send the form below.
Book a site survey Call 01727 822 833Tell us what you need
Send us a few details and one of our engineers — not a call centre — will come back to you within one working day.