FCC ID: 2AVTPNRF nRF51Module

nRFModule Operating Instructions The nRFModule will self-configure when plugged into a parent device:

When plugged into a remote handset or other controller the nRFModule will self-configure as a transmitter:

When plugged into a main board the nRFModule will self-configure as a Receiver:

FCC Statement:

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. This module is not for sale to third parties. Integration instructions are internal confidential manufacturing documents. if FCC not viewable in host (due to potential enclosure) it should be labelled on host "Contains FCC ID: 2AVTPNRF"

Benchmark Control Limited Brandon Lane, Langley Moor, Durham. DH7 8PE. Telephone 0191 378 3789 Registered in England; Company Number 9542701 2nd April 2020 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Re: Request for confidentiality FCC ID: 2AVTPNRF Dear Sir I request that under the provision of 47 CFR 0.459 and 0.457(d) the documents listed below and attached with this application for certification be provided with confidential status. Schematics.pdf Operational Description.pdf Frequency Block Diagrams.pdf Any exhibit / information for which we have requested confidentiality, but which may not be accorded such treatment by the FCC, should be returned to us. The documents listed above contain trade secrets that are treated as confidential by us. Substantial competitive harm to us could result should they be made available to the public. Yours faithfully, Gavin Hancock Gavin Hancock Director

Benchmark Control Limited Brandon Lane, Langley Moor, Durham. DH7 8PE. Telephone 0191 378 3789 Registered in England; Company Number 9542701 Anti-Drug Abuse ACT of 1988 To Whom it Many Concern, We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse ACT of 1988, U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002(b), to the application, is subject to denial of federal benefits, that includes FCC benefits. Thank you for your attention to this matter. Yours faithfully Gavin Hancock Gavin Hancock Director 2nd April 2020

Benchmark Control Limited Brandon Lane, Langley Moor, Durham. DH7 8PE. Telephone 0191 378 3789 Registered in England; Company Number 9542701 30 April 2020 Dear Application Examiner:

Benchmark Control Limited nRF51Module, FCC ID 2AVTPNRF is seeking limited modular approval. The module is not for sale and the user manual integration instructions are internal confidential manufacturing documents The radio meets the requirements for limited modular approval as detailed in FCC 15.212. Compliance to each of the requirements is described below:

1. 2. 3. 4. 5. 6. 7. 8. The modular transmitter must have its own RF shielding. The radio portion of the module is contained in its own RF shielding. The shielding is installed at the factory. Please see the external Photos exhibit. The modular transmitter must have buffered modulation/data inputs. The EUT has buffered data inputs to ensure compliance with Part 15 requirements under conditions of excessive data rates or over-modulation. Please see the Schematics exhibit. The modular transmitter must have its own power supply regulation. The EUT has its own power supply regulation to ensure compliance with Part 15 requirements regardless of the quality or level of external DC supplying the module from the host unit. Please see Schematics exhibit. The EUT is a battery powered device that will not be connected to AC power either directly or indirectly through another device. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(c). The EUT meets the FCC antenna requirements. Please see Antenna information exhibit and internal photos exhibit. The modular transmitter must be tested in a stand-alone configuration. The EUT was tested in a stand-alone configuration. The module was greater than 10 cm from the host device. Please see test setup photos exhibit and technical report exhibit. The modular transmitter must be labeled with its own FCC ID number. The EUT is labeled with its own FCC ID number. Please see FCC ID label & location exhibit. If the FCC ID number will not be visible when the module is installed inside a host device, another label with the FCC ID will be applied to the exterior of the host device. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. The EUT is compliant with all applicable FCC rules. Detail instructions for maintaining compliance are given in the User Manual. The modular transmitter must comply with any applicable RF exposure requirements. The EUT is compliant with all applicable RF exposure requirements. Please see RF Exposure Exhibit. Please contact me if you have additional questions. Your attention to this matter is greatly appreciated. Yours faithfully, Gavin Hancock Gavin Hancock Director

Description Qty Comp Ref Part 100K 0805 100NF 0603 100pF 0805 10PF 0402 10H 0805 1K 0402 1PF 0402 220PF 0402 2N7H 0402 3N3H 0402 3N9H 0402 1F 16V 0603 X7R ABM8-16.000MHZ-10-1-U-T NRF51822QFAB SE2438T-R 1% 100mW Resistor 10% 25V X7R Capacitor 10% 50V X7R Capacitor 5% 50V COG Capacitor 20% 100mA Inductor 5% 63mW Resistor 25% 50V COG Capacitor 20% 25V X7R Capacitor 5% 25V X7R Capacitor 20% 500mA HF Inductor 20% 500mA HF Inductor 20% 500mA HF Inductor 16MHz 10ppm Crystal Nordic Semi SOC Skyworks Front End Module 1 6 1 5 1 4 2 1 1 1 1 2 1 1 1 C2 C4 C13 C14 C18 C19 C5 C6 C7 C8 C15 R1 R2 R3 R4 C11 C12 R5 C17 L1 C1 C10 L4 L2 L3 L5 XT1 IC1 IC2