Reference: DWM14042301
Spring antenna is specialized for wireless data transmission. This antenna with good performance of V.S.W.R, small size design, easily installation, stable performance and good anti-shock and anti-aged compatible for Hoperf Modules.
Reference: DWM14032902
SMA rf antenna connector is pallets copper gold andexternal thread needle sma pallets plate rf connector.
Reference: DWM14032102
Whip antenna for sub-1 GHz, 433MHz,868MHz and 915MHz with SMA male connectors.it's used with wireless module recommanded by Hoperf .
Reference: DWM14042401
SMA RG178 extension female cable for GPS, GSM antenna,RF module, SMA cable,IPEX to SMA jumper cable.
Reference: DWM18032302
USD3.0/pcs MOQ100pcs LoRa Antenna designed for Lora application which required for outdoor waterproof highgain and work at ISM free band like 433MHz /868MHz /915MHz SMA Male Whip antenna.
Reference: DWM16121503
DWM-TLB-3.0QB SUB-1GHz / 2.4GHz Whip antenna with a Collapsible SMA male connectors.Which are available for 433MHz,868MHz.915MHz and 2.4GHz..
Reference: DWM17111002
LoRa Antenna-433MHz High Gain internal aerial piamater FPC Antenna with IPEX connctor.
Reference: DWM15101001
Brand: Semtech
RFM50 module series’ design is based on the high performance RF50 SoC chip, It include a CIP-51 core‘ MCU and 100mW transceiver. It operate at 433/470/868/915 MHz ISM band, comply with FCC, ETSI regulation.
SA628F22 22dBm full duplex wireless voice module with mesh network. Easy setup, high-quality voice, LoRa technology, OTA upgrades, and eco-friendly production.
SA628F22 is a full duplex wireless voice module with mesh network.SA628F22 is very easy to use. It start to work by just connecting antenna, power supply and speaker, microphone, Audio amplifier, RF channel switch, volume adjustment are all embedded on board. SA628F22 has USB interface, and specified PC software. It can be configured and SMS Tx/Rx easily by the PC software.
The SA628F22 module has built-in high speed micro -controllers, high quality voice Codec, high-performance RF chips and amplifiers. This wireless module adopts the newest generation LoRa chip, which has the characteristics of low power consumption, long distance, and flexible frequency adjustment. SA628F22 has I2S and analog audio interface for different application. SA628F22 support full duplex SMS communication.
SA628F22 embed very good voice codec, which achieve much better voice quality than walkie talkie in the market.
SA628F22 supports concurrent Tx and concurrent Rx. It support maximum 8 devices transmitting simultaneously. There is no limitation in receiving. Mesh Network is available to extend the range. The mesh function is easy to achieve by setting the modules as Node, Router or Node & Router.
SA628F22 can be upgraded over air ( OTA ) or by serial communication.
SA628F22 strictly uses lead -free process production and testing, which meets the standards of ROHS and Reach
Frequency Band: 420~510MHz(Customizable 150-960 MHz)
USB Interface
PC software configuration, easy operation
8-Channels Full-Duplex Data/Voice Communication
Echo cancellation function
VOX & PTT
OTA &Serial upgrade
I2S Digital voice+analog voice
Line In + Mic input
Mesh Network, concurrent Tx/Rx
1-3KM transmission distance in the open area
High Receiving sensitivity:-117 dBm
Low power consumption
| Parameters | Condition | Min. | Typ. | Max. | Unit |
| Power Supply | 3.3 | 4 | 5.5 | V | |
| Working temperature | -30 | 25 | 70 | ℃ | |
| Current consumption | |||||
| Sleep current | 68 | uA | |||
| RX Current | @no voice output | 73 | mA | ||
| @4V,8ohm,2W speaker | 450 | ||||
| TX current(High power) | 4.2v,@22dBm | 130 | mA | ||
| RF Parameters | |||||
| Operating frequency | UHF | 420 | 510 | MHz | |
| Customizable frequency | 150 | 960 | MHz | ||
| Default frequency value for 16 channels | UHF ( 1MHz interval) | 440.125 | 455.125 | MHz | |
| Transmit power | Default:22dBm | 0 | 22 | dBm | |
| Second Harmonic | -40 | dBm | |||
| Bandwidth（BW) | 500 | KHz | |||
| Receiving sensitivity | -117 | dBm | |||
| voice parameters | |||||
| Modulation sensitivity | 10 | 100 | mV | ||
| Receive signal-to-noise ratio(SNR) | 90 | dB | |||
| Frequency response | 60 | 3800 | Hz | ||
| Voice output（line out) | Load 16 Ω | 40 | mW | ||
| Voice output power（SPK+,SPK-) | Load 8 Ω | 2000 | mW | ||
| Delay parameters | 2channels | 80 | 100 | 120 | ms |
| 3channels | 120 | 160 | 180 | ms | |
| 4channels | 160 | 200 | 240 | ms | |
| 6channels | 240 | 300 | 360 | ms | |
| 8channels | 320 | 400 | 480 | ms | |
| Pin No. | Pin name | Description |
| 1 | VCC | VCC(3.3-5.5V) |
| 2,8,11,17 | GND | Ground |
| 3 | SDIN | ExternalI2S(0-3.3V) |
| 4 | BCLK | ExternalI2S(0-3.3V) |
| 5 | WS | ExternalI2S(0-3.3V) |
| 6 | VOL-ADJ | 50K variable resistoris recommended, See *5 above |
| 7 | SD | ExternalI2S(0-3.3V) |
| 9 | MCLK | ExternalI2S(0-3.3V) |
| 10 | CS | 0: sleep, 1: working, Pull up internally. |
| 12 | PTT | Press to talk, 0: RX mode, 1: Tx mode. Pull up internally |
| 13 | MIC_N | Connected with external microphone See *3 above. |
| 14 | MIC_P | |
| 15 | SPK+ | Connect with 8 ohm 2W speaker |
| 16 | SPK- | |
| 18 | LINEOUT | Line out , not amplified, can drive earphone and headphone |
| 19 | Reserved | NC |
| 20 | LINEIN | Line in ,maximum 1VRMS |
| 21 | 8 | the onboard 16 RF channel switch, eg. When the rotary switch changed to channel 11th, the output ( 8, 4, 2, 1 ) is: 1011: channel 11th |
| 22 | 4 | |
| 23 | 2 | |
| 24 | 1 |
Fire emergency communication
Subway, tunnel communication
Riding system
High-quality full duplex walkie-talkie
conference call system
Building community security system
Security intercom system for special scenarios
Headset walkie-talkie
Special job assignment walkie-talkie
1x SA628F22 voice module
1x Antenna
1x Speaker
Reference: DWM18012502
SR-FRS-1WU 400MHz-480MHz 1W UHF Analog walkie talkie module easy to use can be embed into various handheld devices, to improve the comprehensive performance of end products.
Reference: DWM23050301
SR105U (UHF:400M-480MHZ) which functions have been enhanced and pinouts/commands are compatible with FRS-0W5U is an ultra-compact and high-cost performance wireless voice intercom and long-distance data transmission module.
Reference: DWM23051301
SA868 is a cost-effective integrated professional walkie-talkie module which include UHF band 400~480 MHz, 320-400MHz and VHF band 134~174 MHz 3 frequency bands versions built-in high-speed microcontroller, high-performance RF transceiver chip and RF power amplifier.
Reference: DWM24062801
SA628F30 1W full duplex wireless voice module with mesh network. Easy setup, high-quality voice, LoRa technology, OTA upgrades, and eco-friendly production.
Reference: DWM22101301
D5W 76-108MHz 500mW FM radio Transmitter-2000m long distance FM transmitter with digital display.
Reference: DWM22101302
433MHz 8W amplifier Board is high Efficiency for data transmission, flight control, extended range RF power amplification.
Reference: DWM23070501
SR105V (VHF:136M-174MHZ) which functions have been enhanced and pinouts/commands are compatible with FRS-0W5V is an ultra-compact and high-cost performance wireless voice intercom and long-distance data transmission module.
Reference: DWM22091204
SR-FRS-0W5U (UHF:400M-480MHZ) is a low cost but high-performance integrated walkie talkie module. With built-in high performance micro controller, narrow band rf transceiver and standard Uart interface, it can be easily used and succeed in all the walkie talkie function with good quality voice and long-distance transmission.
Reference: DWM22083001
SI4732-Radio-ESP32-2.8 inch TFT Touchscreen-Arduino Si4732 chip all Band Radio DSP Receiver FM LW SSB 2.8 inch Big Touch Screen PAM8406 HiFi Headphone Amp.
Reference: DWM22100202
High power 1W, long distance transmission, frequency range 902-928mhz, Microhard P900 core module manufacturer's nominal distance is 60 kilometers.
Reference: DWM18012501
SR-FRS-1WV 136MHz-174MHz 1W VHF Analog walkie talkie module easy to use can be embed into various handheld devices, to improve the comprehensive performance of end products.
Reference: DWM23050301
SR105U (UHF:400M-480MHZ) which functions have been enhanced and pinouts/commands are compatible with FRS-0W5U is an ultra-compact and high-cost performance wireless voice intercom and long-distance data transmission module.
Reference: DWM22091601
SR-FRS-4W (VHF:136MHz-174MHz and UHF: 400MHz-470MHz) is a low cost but high-performance integrated walkie talkie module max power output is 4W. With built-in high performance micro controller, narrow band Rf transceiver.
Reference: DWM14071902
DWM-SA828 V band,134 -- 174MHz, U band, 400 -- 480MHz,3.5-5Km communication distance high-integrated Embedded walkie talkie module for Pocket /handheld device tytera radios or trunking radio module.
Reference: DWM23050402
SR_T300 module is perfect for children toy walkie talkie and other short distance intercom application case. Only an external antenna, battery, speaker, microphone needed for combine a completed toy walkie talkie.
Reference: DWM23052401
SR-T500S module is specially used for children's walkie-talkies and other low-cost walkie-talkie applications with High reception sensitivity, easily achieve 400m-500m walkie-talkie distance features.
Reference: DWM23070502
SR110V-VHF is a enhance version of the SR-FRS-1WV is wireless voice and data transmission walkie talkie module which built-in with a high performance radio frequency transceiver chip, microcontroller and radio frequency power amplifier.
Reference: DWM18012601
FRS-DEMO-A demo board is a full function Walkie Talkie Transceiver system which can be used for these module evaluation SR-FRS-1WU,SR-FRS-1WV,SR-FRS-2WU.
Reference: DWM23082802
SR120UV-VHF is a enhance version of the SR-FRS-2WV is wireless voice and data transmission walkie talkie module which built-in with a high performance radio frequency transceiver chip, microcontroller and radio frequency power amplifier.
Reference: DWM22091201
SR-FRS-2WVS 136M-174MHz is 2W a low cost but high-performance integrated walkie talkie module. With built-in high performance micro controller, narrow band rf transceiver and standard Uart interface.
SA628F22 22dBm full duplex wireless voice module with mesh network. Easy setup, high-quality voice, LoRa technology, OTA upgrades, and eco-friendly production.
