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AMI RF Mesh Communication Module Wireless Networking Module DC2-RSF1

Minimum Order Quantity : 100 Price : Negotiable
Packaging Details : Carton Packaging Delivery Time : 30 days
Payment Terms : T/T Supply Ability : 2000 per day (based on the number of the order)
Place of Origin: Changsha, Hunan Brand Name: Willfar Information Techonology Co., Ltd.
Certification: Wi-SUN Model Number: DC2-RSF1

Detail Information

Color: Grey Brand: Willfar Information
Place Of Origin: Changsha Hunan Communication Mode: Wi-Sun
Application: Single Phase Meter Un-regulated Voltage: 12.0~16.0V
Relative Humidity: 5% ~ 95%, Non-condensing Level Of Protection: IPv6
Operating Temperature: -40°C ~ +70°C
High Light:

4g module


wireless networking module

Product Description

AMI RF Mesh Communication Module For Single Phase Meter DC2-RSF1


Company Profile

Willfar Information Technology Co., Ltd.

- Established in 2004;
- Listed on the STAR Market of the Shanghai Stock Exchange in December 2019;
- Leading supplier of meter reading (AMI) equipment and operation service;
- The first company to develop "One DCU Reading Multi-meter" solution in China;
- The first company to have large-scale application of technologies and systems like "CPU smart-card Charge and Control", "One DCU Reading Multi-meter", LoRa-based RF Communication and "District Metering Area (DMA)”




- The DC2-RSF1 RF Mesh Communication Module is based on SoC (System on Chip) platform as configured for energy meters and other devices to be used in Willfar AMI Solution.


A basic block diagram of the module is shown in Figure as below:

AMI RF Mesh Communication Module Wireless Networking Module DC2-RSF1 0

AMI RF Mesh Communication Module Wireless Networking Module DC2-RSF1 1

- Willfar DC2-RSF1 conforms to Wi-SUN FAN Specification, which is open-standards based secured, interoperable communications for large scale IoT for Smart Utility and Smart City networks.

AMI RF Mesh Communication Module Wireless Networking Module DC2-RSF1 2

- DC2-RSF1 integrates SWMW920S Radio Module produced by Zhuhai Zhonghui Microelectronics Co., Ltd (a sub company of Willfar), whose certification identifier in Wi-SUN Alliance is WSA 0215.

- In a typical application, the module will be installed in electricity metering applications.

- The module will communicate with other network devices. This can include other meters, relays, access points, Distribution Automation devices and other host devices.

- DC2-RSF1 could be adopted to Single Phase Electric Meter



Technical Parameter


Item Parameter
900 MHz NAN Transceiver
Frequency Range 902 to 928 MHz
Data Rate (kbps) 50-300kbps
Spreading Technique Frequency Hopping
Transmitter Output Up to 30 dBm/1W
Receive Sensitivity -99 dBm @100kbps for 1% PER
Modulation FSK, GFSK
NAN Network
Addressing 8-byte MAC Address
Protocol UDP
Level of Protection IPv6
Confidentiality AES-256 Encryption
Authentication ECDSA & RSA Signatures
Application Security DLMS Greenbook 7 Suite 0
Meter (LVTTL) Protocol ANSI C12.18 & DLMS HDLC & RFC1662
Last Gasp w/ backup power to support 90 sec last gasp
Firmware Over The Air upgradable
Operating temperature -40°C ~ +70°C
Relative Humidity 5% ~ 95%, non-condensing
Operating State Current

Receive Mode: (1) Typical 60mA

(2) Maximum 70mA

Transmit 900MHz: (1) Typical 400mA

(2) Maximum 500mA

Last Gasp Alarm: (1) Typical 15mA

(2) Maximum 20mA

Power Supply Un-regulated Voltage: 12.0~16.0V
Ripple: ±75mV
Transient Response: ±200mV









1. Conforms to Wi-SUN FAN specification

  • Feature complete specification is approved
  • Supports IEEE802.15.4g/4e PHY/MAC, 6LowPAN, and IPv6
  • Supports multi-hopping operation and frequency hopping
  • Supports encryption (AES) and authentication (802.1x)

2. Programmable frequency band: 902~928MHz US/BZ and PHY operational mode.

3. Highly Secured: certificate based authentication

4. Easy to install and maintain: self-forming/healing mesh network, upgradeable

5. Longevity: open standards, upgradeable

6. Ability to scale easily to thousands of nodes: optimal use of frequency band

7. Reliable and resilient: mesh, multiple channels, demonstrated interference tolerance

8. Long range: sub GHz, mesh

9. Low latency: high data rates, low channel utilization

10. Energy Efficient: short transmission time, long battery life leaf nodes

11. Low Cost: open standards, multiple silicon vendors

12. Multi-vendor Interoperability: certification program for complete communications protocol stack



Host Interface

Pin number Description Network Define
1, 2 main power +12V
3, 4 Ground GND
5 Data receiving port TXD
6 Logic Circuit Power +DVCC
7 Module sends data instructions IND_TXD
8 Data sending port RXD
9 Module reset MD_RST
10 Online instructions STA
11 status EVENTOUT
12 Module receiving data indication IND_RXD



The NIC can support several different types of antenna:


The onboard antenna is soldered to the NIC PCB. It is a stamped metal antenna supporting 900MHz



The off-board antennas connect to the NIC via an MMCX RF connector. The off-board antenna is located inside the host enclosure. The host enclosure provides a safety barrier, which means that the NIC power supply will generally not need to be isolated from the mains voltage. The off-board antenna is typically a flexible dipole antenna.



External antennas connect to the NIC via the same RF connectors as the off-board antenna.

Typically, the external antenna cables are routed to a bulkhead SMA connector on the outside of the host enclosure. An external antenna solution will require safety isolation from the AC mains voltage.





For Single Phase Electric Meter, or data concentrator or other instruments required communication module.



AMI RF Mesh Communication Module Wireless Networking Module DC2-RSF1 3


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