TF7WX-31-1000Digital Analog 2.4 GHz Wireless Controller

Everex Communications, Inc WC-31 User’s Manual: WC-31 is a 2.4Ghz 802.15.4 wireless digital analog I/O transceiver which is used in energy management, building control, HVAC applications. It communicates with the host and/or other WC-31 units in the unlicensed 2.4Ghz ISM band. It is powered by a 24VAC power source. The unit consists of the following I/O functions: 1. Three relays: 1A/30V, normally open relays. 2. Two thermistor inputs: Connect to 30K thermistor, the unit can provide remote temperature reading. 3. Serial communication bus: Other serial peripheral devices can be connected to the unit for providing expansion of the additional digital inputs/outputs or other control function, for example, thermostat or HVAC controller. One of the important features of WC-31 is its mesh network, self-forming and self-healing capability. Each WC-31 unit is a router which can relay information and command to other WC-31s. If one of WC-31 in the network path becomes non-functional, WC-31 can automatically seek other WC-31 to reform the network connection. Installation: There are a 12 pin screw terminal and a 4 pin serial communication connector. The 12 pin screw terminal provides connections to thermistors for temperature measurement and to other HVAC devices. The 4 pin connector provides serial communication and 24VAC power to other serial device, such as thermostat or HVAC controller. Please refer to the picture below for pin assignment of each connector. WC-31 should be mounted high up on the wall to provide maximum RF communication range. 12 pin screw terminal pin assignment: Pin 1 : Thermistor 1 input Pin 2 : Thermistor 1 input Pin 3 : Thermistor 2 input Pin 4 : Thermistor 2 input Pin 5 : Relay 1 NO (normally open) Pin 6 : Relay 1 COM Pin 7 : Relay 2 NO (normally open) Pin 8 : Relay 2 COM Pin 9 : Relay 3 NO (normally open) Pin 10: Relay 3 COM Pin 11: 24VAC input Pin 12: 24VAC input (GND) 4 pin serial communication connector pin assignment: Pin 1 : 24VAC Pin 2 : Serial communication signal 1 Pin 3 : Serial communication signal 2 Pin 4 : 24VAC (GND) Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by on or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. Caution: This equipment is authorized for use under the United States Federal Communication Commission Rules and Regulations, Code of Federal Regulations Chapter 47 part 15 and must be installed in accordance with the instructions provided in this document. Failure to install or operate this equipment as instructed in this document could void the user’s authority to operate the equipment. This equipment contains no user serviceable parts. Any modification or repairs to the internal components or to the antenna configuration of the equipment without the express written consent of Everex Communications, Inc. could void the user’s authority to operate the equipment. Note: To comply with FCC RF exposure requirements in section 1.1307, a minimum separation distance of 20cm (8 inches) is required between the equipment and all persons. Copyright © 2013 Everex Communications, Inc. Everex Communications, Inc. reserves the right to change the content of this user’s manual without notification

Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 44 of 48 FCC Part 15C Test Report 15 Exhibit C – EUT Photographs 15.1 EUT – Top View 15.2 EUT – Bottom Side View Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 45 of 48 FCC Part 15C Test Report 15.3 EUT – Front View 15.4 EUT – Rear Side View Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 46 of 48 FCC Part 15C Test Report 15.5 EUT – Left Side View 15.6 EUT – Right Side View Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 47 of 48 FCC Part 15C Test Report 15.7 EUT – 24 VAC Power Transformer (Supporting Equipment) 15.8 EUT – Thermostat (Supporting Equipment)

Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 40 of 48 FCC Part 15C Test Report 13 Exhibit A – FCC Equipment Labeling Requirements 13.1 FCC ID Label Requirements As per FCC §2.925, (a) Each equipment covered in an application for equipment authorization shall bear a nameplate or label listing the following: (1) FCC Identifier consisting of the two elements in the exact order specified in §2.926. The FCC Identifier shall be preceded by the term FCC ID in capital letters on a single line, and shall be of a type size large enough to be legible without the aid of magnification. Example: FCC ID: XXX123 Where: XXX—Grantee Code, 123—Equipment Product Code As per FCC §15.19, (a) In addition to the requirements in part 2 of this chapter, a device subject to certification, or verification shall be labeled as follows: (3 ) All other devices shall bear the following statement in a conspicuous location on the device: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. (4) Where a device is constructed in two or more sections connected by wires and marketed together, the statement specified above is required to be affixed only to the main control unit. If the EUT is integrated within another device then a label affixed to the host shall also state, “Contains FCC ID: XXXXXX” (5) When the device is so small or for such use that it is not practicable to place the statement specified under paragraph (a) of this section on it, the information required by this paragraph shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. However, the FCC identifier or the unique identifier, as appropriate, must be displayed on the device. 13.2 FCC ID label Contents and Location

Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 48 of 48 FCC Part 15C Test Report 15.9 EUT – Main PCB Front View 15.10 EUT – Main PCB Back View --- END OF REPORT ---

Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 9 of 48 FCC Part 15C Test Report 4 FCC §15.247 (i) & §2.1091– RF Exposure 4.1 Applicable Standard According to FCC §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 * (100) 30 1.34-30 824/f 2.19/f * (180/f 2 ) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100,000 / / 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density 4.2 MPE Prediction Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 S = PG/4R² Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna 4.3 MPE Results Maximum peak output power at antenna input terminal (dBm): 17.92 Maximum peak output power at antenna input terminal (mW): 61.94 Prediction distance (cm): 20 Prediction frequency (MHz): 2440 Maximum Antenna Gain, typical (dBi): 3.5 Maximum Antenna Gain (numeric): 2.239 Power density of prediction frequency at 20.0 cm (mW/cm 2 ): 0.028 MPE limit for uncontrolled exposure at prediction frequency (mW/cm 2 ): 1.0 The device is compliant with the requirement MPE limit for uncontrolled exposure.

Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliance Laboratories Corp. This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA*, NIST, or any agency of the Federal Government. * This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “*” (Rev.2) FCC PART 15 SUBPART C TEST AND MEASUREMENT REPORT For Everex Communications, Inc. 1045 Mission Court, Fremont, CA 94539, USA Report Type: Original Report Product Type: 2.4 GHz 802.15.4 I/O Wireless Controller Prepared By: Bo Li Report Number: R1301211-247 Report Date: 2013-04-12 Reviewed By: Quinn Jiang Test En gineer Bay Area Compliance Laboratories Corp. 1274 Anvilwood Avenue, Sunnyvale, CA 94089, USA Tel: (408) 732-9162 Fax: (408) 732-9164 FCC ID: TF7WX-31-1000 Model: WC-31 Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 2 of 48 FCC Part 15C Test Report TABLE OF CONTENTS 1 General Description ..................................................................................................................................................... 5 1.1 Product Description for Equipment Under Test (EUT) ...................................................................................... 5 1.2 Mechanical Description of EUT ......................................................................................................................... 5 1.3 Objective ............................................................................................................................................................. 5 1.4 Related Submittal(s)/Grant(s) ............................................................................................................................. 5 1.5 Test Methodology ............................................................................................................................................... 5 1.6 Measurement Uncertainty ................................................................................................................................... 5 1.7 Test Facility ........................................................................................................................................................ 6 2 System Test Configuration.......................................................................................................................................... 7 2.1 Justification ......................................................................................................................................................... 7 2.2 EUT Exercise Software....................................................................................................................................... 7 2.3 Special Equipment .............................................................................................................................................. 7 2.4 Equipment Modifications.................................................................................................................................... 7 2.5 Local Support Equipment ................................................................................................................................... 7 2.6 EUT Internal Configuration Details .................................................................................................................... 7 2.7 Interface Ports and Cables .................................................................................................................................. 7 3 Summary of Test Results ............................................................................................................................................ 8 4 FCC §15.247 (i) & §2.1091– RF Exposure ................................................................................................................. 9 4.1 Applicable Standard ............................................................................................................................................ 9 4.2 MPE Prediction ................................................................................................................................................... 9 4.3 MPE Results ....................................................................................................................................................... 9 5 FCC §15.203 – Antenna Requirements ...................................................................................................................... 10 5.1 Applicable Standard .......................................................................................................................................... 10 5.2 Antenna List ...................................................................................................................................................... 10 6 FCC §15.207 - AC Power Line Conducted Emissions .............................................................................................. 11 6.1 Applicable Standard .......................................................................................................................................... 11 6.2 Test Setup ......................................................................................................................................................... 11 6.3 Test Equipment List and Details ....................................................................................................................... 11 6.4 Test Setup Block Diagram ................................................................................................................................ 12 6.5 Test Procedure ........................................................................................…

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Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 41 of 48 FCC Part 15C Test Report 14 Exhibit B – Test Setup Photographs 14.1 AC Line Conducted Emissions - Front View 14.2 AC Line Conducted Emissions Side View Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 42 of 48 FCC Part 15C Test Report 14.3 Radiated Emission below 1 GHz Front View at 3 Meters 14.4 Radiated Emission below 1 GHz Rear View at 3 Meters Everex Communications, Inc. FCC ID: TF7WX-31-1000, Model: WC-31 Report Number: R1301211-247 Page 43 of 48 FCC Part 15C Test Report 14.5 Radiated Emission above 1 GHz Front View at 3 Meters 14.6 Radiated Emission above 1GHz Rear View at 3 Meters