HVAC / Parts & Accessories
User Manual for Supra DirectKey Module 3.0
Quick guide for the Supra DirectKey Module 3.0. Learn about technical specifications, operating conditions, certification requirements, and integration features for this Bluetooth communication module.
Table of contents
Quick guide from the manual
The Supra DirectKey Module 3.0 is a low-power Bluetooth communication module designed to retrofit existing hospitality and commercial access control devices. It enables secure wireless communication of credentials from a user's smartphone to a locking device, eliminating the need for traditional security tokens like magnetic stripe or RFID cards.
Product Overview
The module utilizes a high-performance 2.4GHz Bluetooth Smart 5.1 radio. Secure communications are achieved through an additional security layer provided by the Supra cloud credentialing service. It is designed to be integrated into existing hardware to provide a virtual magnetic stripe or RFID card read capability.
Technical Specifications
- Operating Voltage: 1.8V to 3.6V
- Operating Temperature: -40°C to 85°C
- Output Power: +2dBm (Maximum)
- Communication Interfaces: UART & SPI
- Bluetooth Version: Bluetooth Smart 5.1
- Dimensions: 0.6" x 1.2" x 0.140"
- Compliance: RoHS-compliant package
Label Requirements
To maintain regulatory compliance, the label on the host device must contain the following information:
- FCC ID: TCZ-10105567G1
- IC: 1175F-10105567G1
Certifications and Compliance
The device complies with the following standards:
- United States (FCC): Complies with Part 15 of the FCC rules. The equipment must be installed and operated with a minimum distance of 20cm between the radiator and the user's body.
- Canada (IC): Complies with Industry Canada’s license-exempt RSSs. Must be installed and operated with greater than 20cm between the radiator and the user's body.
- European Union (CE): Conforms to RED Directive (2014/53/EU), WEEE Directive (2012/19/EU), and Safety (IEC/EN62368-1 + CB).
For further support, contact Carrier Corporation at 4001 Fairview Industrial Dr. SE Salem, OR USA 97302 or visit www.suprasystems.com.
Official resources from the manual
Manufacturer information
Carrier Global Corporation
Practical help
Common problems
RF Exposure Compliance
Ensure the device is installed and operated with a minimum distance of 20cm between the radiator and the user's body.
Host Product Compliance
If the host product is marketed as Part 15 Subpart B compliant, the manufacturer must provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the module installed.
Before use
- Verify the supply voltage is within the 1.8V to 3.6V range.
- Ensure the operating environment is within the -40°C to 85°C temperature range.
- Confirm the host device supports UART or SPI communication interfaces.
- Ensure the final product label includes the required FCC ID and IC ID.
- Verify that the installation allows for a 20cm separation distance from the user.
Specs in practice
- Operating Voltage
- The module requires a stable power supply between 1.8V and 3.6V DC.
- Bluetooth Smart 5.1
- The module uses low-energy Bluetooth technology for secure credential transfer.
- Output Power
- +2dBm is the maximum radio frequency output power.
Images and diagrams
- The module features a compact footprint of 0.6 x 1.2 x 0.140 inches, suitable for integration into existing access control hardware.
Model compatibility
- Designed for retrofitting existing hospitality and commercial access control devices.
- Requires Supra cloud credentialing service for secure communication.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.