FCC ID PL3-100B, Improper Frequency Transmission

According to reddit user, /u/foreverska, FCC ID PL3-100B “Pebble Smart Doggie Doorbell” operates on a frequency of 315 MHz rather than the FCC ID authorized 433.92 MHz.
The schematics indicate CS5211DGO as the transmission chip, as well as the Circuit Description confirming 433.92 MHz operation.
Assuming the device /u/foreverska tested is genuine, it’s likely Pebble Smart altered their designs after FCC ID certification to use 315 MHz for power, cost, or range improvements. This magnitude of a change would require re-certification of the device with the FCC.


The DMR Digital Transceiver manufactured by Ailunce and sold under model number HD1 does not appear to have a valid FCC ID.
The FCC ID listed on the labeling is indicated as 2AAR8AILUNCEHD1, but no corresponding registration for that FCC ID exists.
The grantee code 2AAR8 is a valid code for “HENAN ESHOW ELECTRONIC COMMERCE CO., LTD”, a manufacturer of 2-way radio equipment, but it appears no FCC IDs have been issued to that company for this specific equipment.

Ailunce DMR Digital Transceiver HD1 Labeling
Ailunce DMR Digital Transceiver HD1 Labeling

Per the labeling, this device operates in 2 frequency ranges, 136-174 MHz and 400-480 MHz. The device is also labeled Shenzhen Retevis Technology Co., Ltd

FCC ID BCG-E2186A [Apple iPhone 6S A1633]

FCC ID BCG-E2186A is not a valid FCC ID, however, as FCC ID model codes and IC ID model codes tend to correspond, and the FCC code E2186A is listed alongside the Industry Canada code 579C-E2946A, the proper FCC ID for this device is likely BCG-E2946A.

Model Number: A1633
IC ID: 579C-E2946A
FCC ID: BCG-E2186A [BCG-E2946A]

Rules on marketing a wireless device before FCC ID certification

Marketing a device without FCC certification

Per 47 CFR §2.803

(a) Marketing, as used in this section, includes sale or lease, or offering for sale or lease, including advertising for sale or lease, or importation, shipment, or distribution for the purpose of selling or leasing or offering for sale or lease.

(b) General rule. No person may market a radio frequency device unless:

  1. For devices subject to authorization under certification, the device has been authorized in accordance with the rules in subpart J of this chapter and is properly identified and labeled as required by §2.925 and other relevant sections in this chapter; or
  2. For devices subject to authorization under Supplier’s Declaration of Conformity in accordance with the rules in subpart J of this part, the device complies with all applicable technical, labeling, identification and administrative requirements; or
  3. For devices that do not require a grant of equipment authorization under subpart J of this chapter but must comply with the specified technical standards prior to use, the device complies with all applicable, technical, labeling, identification and administrative requirements.

(c) Exceptions. The following marketing activities are permitted prior to equipment authorization:

  1. Activities under market trials conducted pursuant to subpart H of part 5.
  2. Limited marketing is permitted, as described in the following text, for devices that could be authorized under the current rules; could be authorized under waivers of such rules that are in effect at the time of marketing; or could be authorized under rules that have been adopted by the Commission but that have not yet become effective. These devices may not be operated unless permitted by §2.805.

(i) Conditional sales contracts (including agreements to produce new devices manufactured in accordance with designated specifications) are permitted between manufacturers and wholesalers or retailers provided that delivery is made contingent upon compliance with the applicable equipment authorization and technical requirements.

(ii) A radio frequency device that is in the conceptual, developmental, design or pre-production stage may be offered for sale solely to business, commercial, industrial, scientific or medical users (but not an offer for sale to other parties or to end users located in a residential environment) if the prospective buyer is advised in writing at the time of the offer for sale that the equipment is subject to the FCC rules and that the equipment will comply with the appropriate rules before delivery to the buyer or to centers of distribution.

(iii) (A) A radio frequency device may be advertised or displayed, (e.g., at a trade show or exhibition) if accompanied by a conspicuous notice containing this language:

This device has not been authorized as required by the rules of the Federal Communications Commission. This device is not, and may not be, offered for sale or lease, or sold or leased, until authorization is obtained.

(B) If the device being displayed is a prototype of a device that has been properly authorized and the prototype, itself, is not authorized due to differences between the prototype and the authorized device, this language may be used instead: Prototype. Not for Sale.

(iv) An evaluation kit as defined in §2.1 may be sold provided that:

  1. Sales are limited to product developers, software developers, and system integrators;

(B) The following notice is included with the kit:

FCC NOTICE: This kit is designed to allow:

  1. Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and
  2. Software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.

(C) The kit is labeled with the following legend: For evaluation only; not FCC approved for resale; and

(D) Any radiofrequency transmitter employed as part of an evaluation kit shall be designed to comply with all applicable FCC technical rules, including frequency use, spurious and out-of-band emission limits, and maximum power or field strength ratings applicable to final products that would employ the components or circuitry to be evaluated.

(d) Importation. The provisions of subpart K of this part continue to apply to imported radio frequency devices.

[78 FR 25161, Apr. 29, 2013, as amended at 79 FR 48691, Aug. 18, 2014; 80 FR 52414, Aug. 31, 2015; 82 FR 50825, Nov. 2, 2017]

FCC Form 740

Download: FCC-Form-740 [pdf]


Warning: Any person who knowingly makes a false declaration may be fined not more than $250,000 or imprisoned not more
than 5 years, or both, pursuant to 18 U.S.C. § 1001


This form must be completed for each radio frequency device, as defined in 47 U.S.C. 302 and 47 C.F.R. 2.801, which is imported into the Customs territory of the United States. The original shall be filed with the U.S Customs Service on or before the date the shipment is delivered to a U.S. port of entry.

The completed form must accompany each such entry.

The following are typical examples of devices that require the use of FCC Form 740: radio and TV receivers, converters, transmitters,
transmitting devices, radio frequency amplifiers, microwave ovens, industrial heaters, ultrasonic equipment, transceivers, and computers.

Marketing, as used in this form (and 47 C.F.R. 2.1201 et seq.), means sale or lease (including advertising for sale or lease, or display at a
trade show) or import, ship or distribute for the purpose of selling or leasing or offering for sale or lease.

Limited quantities, as used in this form, are the number specified in 47 C.F.R. 2.1204(a)(3). Waivers of this limit are infrequently granted
but may be requested from the FCC office listed in 47 C.F.R. 2.1204(a)(3)(iii). Written waiver requests must contain specific information
required by that office.

Equipment imported for test, evaluation or display (see import conditions 3 or 4 of Part II of this form) may not be marketed (sold or
leased, offered for sale or lease, advertised, etc.). Display of this equipment must include markings clearly indicating that the device(s) are
not eligible for sale. See 47 C.F.R. 2.803 for details regarding this labeling.

Wireless telephony devices that do not have a FCC grant of equipment authorization must either comply with 47 C.F.R. 2.1204(a)(5) or 47C.F.R. 2.803(a)(2) (e.g., Verification or Declaration of Conformity is required).

The identification (company name and model number/FCC ID) of the radio frequency device specified on the front of this form must be
identical to the company name and model number/FCC ID inscribed on the device. If the device being imported requires an equipment
authorization to be issued by the FCC (e.g., Certification), it is important that the name of the company, description of the device and FCC
ID specified on the grant of equipment authorization agree exactly with the same information shown on the front of this form. Any
discrepancy between the information on this form and the FCC grant of equipment authorization may result in unnecessary delays,
additional expense, or enforcement action.

FCC ID NHVWB1U523 [Keyfob]

The FCC ID NHVWB1U523 is unregistered in the FCC.gov system. The first few characters (NHV) indicate this key is manufactured by Tohoku Alps Co Ltd, but the remaining characters (WB1U523) do not match any of their FCC licenses. The key does have a valid Industry Canada filing, indicating an operating frequency of 433.0 MHz – 434.0 MHz.

P/N SET.38010-S5A-A.Tx:72147-S5A-A

Canada: 3495 104 709A

ALPS Electric Co., Ltd Japan

FCC ID NHVWB1U523 Back Image
FCC ID NHVWB1U523 Back Image
FCC ID NHVWB1U523 Front Image (Honda Keyfob)
FCC ID NHVWB1U523 Front Image (Honda Keyfob)

FCC ID A3LGT805S [Samsung Tablet]

Recently received an image of a Samsung Galaxy Tablet S10.5 with the FCC ID A3LGT805S. Although the grantee code of A3L matches Samsung’s filings, the FCC ID appears to be invalid as there is no matching (or closely matching) model code of GT805S. This FCC ID does not appear to be a typo, but perhaps a clerical mistake of printing an unlicensed FCC ID.

Galaxy Tablet S 10.5 Back
Galaxy Tablet S 10.5 Back
            INTERNAL STOREGE :  2 GB
            DEVICE  STORAGE : 501GB
            FULL HD
           MODEL NUMBER :  T805S
           ANDROID VERSION : 5.12