This DL-RTS1278M RF module is a high-performance wireless serial port LoRa module developed by DreamLnk for wireless meter reading and industrial remote control, it was embedded with high-speed low-power MCU and high-performance spread-spectrum RF chip SX1278, with LoRa spread-spectrum technology, while using efficient cyclic interleaving error correction coding, anti-interference and sensitivity are at the most advanced level in the industry.
It provides multiple channel selections, and can online modify the serial port rate, transceiver frequency, transmit power, RF rate and other parameters. The default frequency is 434.125MHz. The working voltage of DL-RTS1278M is 2.1-3.6V, and only consumes 13mA in the receiving state. DL-RTS1278M has four working modes, which can be arbitrarily switched between the modes. In the 1SEC cycle polling wake-up power saving mode (Polling mode), the reception consumes only tens of microamps. One 3.6V/3.6AH Lithium battery can work for several years and is very suitable for battery-powered systems.
This RF module is a new generation of multi-channel embedded wireless data transmission module, which can set multiple channels, stepping to 1KHz, transmitting power up to 100mW, with product size of 32.1mm x 18.3mm x 6.0mm, very convenient for customers to embed in the system. DL-RTS1278M has low power consumption and is very suitable for battery-powered systems.
DL-RTS1278M RF module adopts spread spectrum modulation and efficient error correction coding, its coding gain is nearly 10dBm higher than traditional modulation methods (such as FSK, GFSK and PSK), and its anti-interference and sensitivity are at the most advanced level in the industry. At the same time, the code also includes reliable error detection capabilities, which can automatically filter out errors and false information, and truly realize a transparent connection, which is nearly double the distance of the traditional module under the same transmission power. Therefore, DL-RTS1278M is suitable for extremely harsh environments and occasions with strict requirements on distance.
Features:
● 3000 meters transmission distance (0.81Kbps)
● Working frequency 433MHz, 470MHz, 868MHz, 915MHz optional
● -132dBm = 810bps ultra-high sensitivity
● Maximum 100mW transmit power
● LoRa spread spectrum modulation
● Zero waiting to wake up, with wake-on-radio (WOR) function
● Efficient cyclic interleaving error correction coding
● Four working modes, standby current 2.5uA
● Built-in watchdog, ensure long-term reliable operation
Applications
● Wireless automatic meter reading
● Extremely long-distance data communication
● Wireless sensor network
● Industrial automation data collection
● Field data remote control and telemetry
● Various transmitters, flow meters and smart meters
● Building automation and security
● Monitoring and control of mining and petroleum equipment
● Environment, energy saving, temperature monitoring
● Intelligent transportation, intelligent power
● Consumer Electronics
● Intelligent robot
● Street light control
Technical parameters
No | Name | Parameters |
1 | Module size | 18.3 * 32.3mm (exclude Antenna) |
2 | Place of origin | All imported components, origin: Japan, the United States, Germany |
3 | Production Process | SMT lead-free process, AOI automatic testing, in line with environmental certification standards |
4 | Interface | 1*7*2.54mm, can use universal board and DuPont cable |
5 | Working frequency | The default is 434.125MHz, other frequencies can be customized 470-510MHz, 855-885MHz, 900-930MHz |
6 | Frequency step | 1KHz setting step |
7 | Modulation | LoRa spread spectrum modulation |
8 | Transmit power | 100mW = 3.3V (0-7, 8 levels adjustable, each level increases by 3dBm, maximum 100mW |
9 | Receiving sensitivity | -132dBm=0.81Kbps, -118.5dBm=18.23K bps |
10 | Air transmission rate (occupied bandwidth) | 0.81K/(BW125K) , 1.46K/(BW125K) , 2.6K/(BW125K) , 4.56K/(BW125K),9.11K/(BW250K),18.23K/(BW500K) |
11 | Interface rate | 1200 – 115200bps |
12 | Interface verification method | 8N1/8E1/8O1 |
13 | Interface buffer space | Double 256Bytes |
14 | Power supply | 2.1~3.6V |
15 | Transmitting current (typical value) | 100mA = 100mW |
16 | Continuous receiving current | 13mA = 4.56Kbps, 15mA = 18.23Kbps, in Receiving rate (typical value) |
17 | Sleep current | 2.5uA = 3.3V (typical value), Max 4.0uA |
18 | Transmission distance | 3000M = 0.81Kbps; 2000M = 9.11K bps (in an open air) |
19 | Antenna port impedance | 50Ohm |
20 | Operating temperature | -40 ~ +85℃ |
21 | Working humidity | 10% ~ 90% (Relative humidity, non-condensing) |
