FCC ID: 2A8O8-M2440N 20A co-negative MPPT controller

HCC-20MPPTN-US/CA HCC-40MPPTN-US/CA

Low temperature protection

(Frozen charge forbid) Press the Setting key to enter SET mode,Choose LI or Use Mode. Low Temperature Protection(Frozen Charge Forbid) . Frozen Charge Forbid Range = 329/05 Frozen Discharge Forbid Range = 59/-155 When the temperature reaches the protected on/off range, the low-temperature protection will automatically turn on/off after 30 seconds. FCC Warning 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 not 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 one 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. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator &

your body.

Label Location On EUT Label Product Name: 20A co-negative MPPT controller Model No.: M2420N FCC ID:2A8O8-M2440N 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.

HQST GLOBAL LIMITED Declaration concerning Antenna Specification It is hereby declared that the product Model No.: M2420N, M2440N, M4860N, MS2440N FCC ID : 2A8O8-M2440N fulfills the requirement in FCC test relating to the antenna type. The device specified above confirms to the FCC recommendations for internal antenna type(s) described below:

Model No. of antenna: N/A Type of antenna:

Gain of the antenna:

Frequency range:

PCB antenna

-3.68 dBi 2402-2480MHz The mounting of the antenna is fixed to the radio module and no other antenna should be used. Company name:

Address:

City:

ZIP / Postal code:

Country:

Place:

HQST GLOBAL LIMITED 28 Canton Road, Tsim Sha Tsui,Room 803, Lippo Sun Plaza Kowloon HONG KONG 999077 Kowloon

HONG KONG HONG KONG Date: 10/18/2022 Signature:

version01

Test Date : 2019.05.06 JDY-23

-RFsister 67 10 17688988025 www.RFsister.com Test Date : 2019.05.06 1.Electrical Characteristics No. 1 2 3 4 5 6 7 Item Working Central Frequency Band Width Gain V.S.W.R (in BW) Polarization Azimuth Beam width Impedance Specifications 2450 MHz 75 MHz ( 24002500MHz )

-5.5--3dbi 4.3 Linear Omni-directional 50 2.Return Loss and Smith Chat Return Loss 67 10 17688988025 www.RFsister.com V.S.W.R Test Date : 2019.05.06 Smith Chat 67 10 17688988025 www.RFsister.com Test Date : 2019.05.06 3.Physical Test Environment E5071C 4.Shape of the antenna Efficiency 67 10 17688988025 www.RFsister.com Test Date : 2019.05.06 H pattern Fre(Mhz) 2400(MHz) 2450(MHz) 2500(MHz) Max gain(dB)

-6.79 dB

-4.92 dB

-4.07 dB Degree 114.00 deg 112.00 deg 108.00 deg 67 10 17688988025 www.RFsister.com Test Date : 2019.05.06 E1 pattern Fre(Mhz) 2400(MHz) 2450(MHz) 2500(MHz) Max gain(dB)

-5.29 dB

-4.80 dB

-4.87 dB Degree 164.00 deg 160.00 deg

-20.00 deg 67 10 17688988025 www.RFsister.com Test Date : 2019.05.06 E2 pattern Fre(Mhz) 2400(MHz) 2450(MHz) 2500(MHz) Max gain(dB)

-5.86 dB

-4.78 dB

-3.68 dB Degree 174.00 deg

-70.00 deg

-68.00 deg 67 10 17688988025 www.RFsister.com