BH61 Wireless Alarm Hub
12-24VDC power source:
○ 12VDC at 2.5A max
○ 24VDC at 1.25A max
A smartphone or laptop
A #2 Phillips driver (screwdriver or power drill)
⅛ inch (3mm) drill bit
¼ inch (6.35mm) drill bit, if using wall anchors
This product does not include a power adapter or power supply and is intended to be supplied by a certified Power Supply marked “Limited Power Source”, “LPS” and
rated voltage within 12-24 Vdc, 2.5-1.25A, Tmax 50 °C.

Relay Overview 1/2

Status LED Behavior
Flashing Orange
Relay is updating firmware
Flashing Blue
Relay is powered, but cannot reach the hub
Solid Blue
Relay is running, connected to the hub and receiving / transmitting events

Connect
Please note: Add your BH61 Wireless Alarm Hub to Command before setting up your
Wireless Relay.
To add your Relay, please proceed to: verkada.com/start

Interface/Connectors

Relay Output (NO, COM, NC)
● 12VDC operates at 2.5A Max
● 24VDC operates at 1.25A Max
(Optional) Wired Signal Input (GND, IN)
Relay Power Input (GND, 12-24VDC)
Test/Pairing Button

BX21 Technical Specifications

Power Consumption	30W Maximum
DC Power Input	12-24VDC
Inputs	Wired Signal Input (Optional)
Relay Outputs	1 Wet Relay Relay Output Voltage ≡ Relay Input Voltage, e.g. ● 12VDC Input, 12VDC Output 2.5A max ● 24VDC Input, 24VDC Output 1.25A max
Wireless Communication	Proprietary 915 MHz (US, Canada) / 868 MHz (UK, Europe) / 916.8MHz (ANZ)
Wireless Range	1,000 ft (line–of–sight); 200 ft (typical environment)
Dimensions	44.00mm(W) x 119.60mm (L) x 30.30mm (H)
Weight	226g / 8oz
Operating Temperature	0°C – 50°C, 0- 90% Humidity (non condensing)
Relay Durability	100,000 Cycles at Max Load
Compliance	FCC, IC
Connectivity	Connects to Verkada’s Wireless Alarm Hub (BH61)
Included Accessories	1x T10 Torx Wrench
Mounting Options	1x VHB Adhesive Strip, 2x Wall Anchors & Screws

Mounting 1/3

Using the provided T10 Torx Wrench, loosen the security screw at the base of the Relay.

With the security screw fully loosened, lift the cover upwards to remove it entirely.

Wall Mounting: At the installation location, mark the mounting surface through the perforations in the top-right and bottom-left of the Relay, as shown.

For a solid material like wood or metal, drill ⅛ inch pilot holes in the mounting surface at the marks. For drywall, drill ¼ inch holes. Insert plastic Wall Anchors into the holes. Secure the Relay to the surface using the provided Wall Screws.
VHB Mounting: Peel the protective film from one side of the adhesive mounting strip. Adhere to the back side of the Relay. Peel the remaining protective film and affix the Relay to the mounting surface.

Mounting 3/3
Wire the Relay.
See Pages 10-13 for Recommended Wiring Instructions.

Once wiring has been completed, replace the device’s cover.
Tighten the security screw.

Recommended Wiring (1/4)

Verkada’s BX21 Wireless Relay is capable of supporting output devices e.g. sirens, strobes, etc. that require 12-24V voltage and draw up to 2.5A for 12V or 1.25A for 24V
(resistive).

Signal	AWG	Conductor	Shielded	Max Length
Power (22 Gauge)	22	Yes	Yes	600 ft
Power (18 Gauge)	18	Yes	Yes	1500 ft

Wiring methods shall be in accordance with National Electrical Code, ANSI/NFPA 70.
Shielded Wiring
With the BX21, you must use shielded wiring. Improper shielding may result in unintended product behavior.
The BX21 Wireless Relay sits in-line with DC-powered output devices which can be triggered wirelessly. The Relay can also transmit signals from a wired input.
The Relay enables output devices in a wet configuration, i.e. devices which do not draw power from external sources beyond the Relay itself.
According to the requirements of the output device, these should be wired to either the Normally Open (NO) or Normally Closed (NC) terminals in the terminal block denoted Relay.
The power source which supplies the Relay, and implicitly the output device, should be wired to the terminal block marked Power.
Recommended Wiring (2/4)

Wiring Steps:

Noting polarity, wire the output device to NO (Page 12) or NC (Page 13) and COM on the Relay terminal 7block.
Optionally: wire an additional input to the Signal terminal block e.g. a door sensor.
Noting polarity, wire a 12-24VDC power source to GND and COM on the Power terminal block.
Press and hold the Test/Pairing button to trigger the Relay (the button is recessed and is easily accessed using the provided Torx Wrench).
If wired correctly, the output device should exhibit its expected output behavior.
Upon output device failure, please confirm the device operates within power limitations and that the Relay iswired as per instructions.
The Test/Pairing button can also be pressed in the event that the Relay does not automatically pair with a BH61 Hub, however, this behaviour is not expected.
Do not hesitate to contact support: verkada.com/support

Recommended Wiring (3/4)
Normally Open (NO)

Recommended Wiring (4/4)
Normally Closed (NC)

Appendix

BX21 Compliance

FCC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (I) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference thot moy cause undesired operation. This equipment hos been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and con radiate radio frequency energy and if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
FCC Caution:

Any changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate this equipment.
IMPORTANT NOTE: FCC Radiation Exposure Statement : This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.
IC Statement
This device complies with ISED’s licence-exempt RSSs. Operation is subject to the following two conditions: (I) This device may not cause harmful interference, and (2) this device must accept any interference received. including interference that moy cause undesired operation.
IMPORTANT NOTE: IC Radiation Exposure Statement: This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.
Note This equipment is for use in a restricted access area.

Appendix

Support

Thank you for purchasing this Verkada product. If for any reason things don’t work right, or you need assistance, please contact us immediately. verkada.com/support
Sincerely, The Verkada Team

Verkada Inc. 405 E 4th Ave, San Mateo, CA 94401
All specifications are subject to change without notice sales@verkada.com
Copyright © 2022 Verkada Inc. All rights reserved.