The product uses the company’s self-developed “LORA” (remote) technology, the maximum transmission distance can reach 15km in the suburbs, 2 to 5km in the urban area, the frequency range is 137MHz ~ 1050MHz. Suitable for automatic meter reading systems, industrial automation equipment, wireless sensor networks, wireless alarm and security systems. According to the company, the RF transceiver IC used in the automatic meter reading system wireless security system only has a transmission distance of only 1 to 2 km in the suburbs. With this new IC, the transmission distance can be greatly extended, so no relay device or complex is needed. Communication infrastructure. LORA is a technology that combines spectrum diffusion communication technology with GFSK modulation technology. Maximum data transmission speed is 300kbps, maximum link budget is 168dB, maximum RF output power is +20dBm, signal receiving sensitivity is -146.5dBm, third-order input cut-off point (IIP3) is -12dBm, anti-blocking (Blocking) The Immunity feature is 100dB and the received signal strength (RSSI) has a dynamic range of 115dB. In addition to GFSK, the modulation method can also use FSK, MSK, GMSK, and OOK to meet electromagnetic wave related regulations in the United States, Europe, China, and Japan. Specifically, standards such as WMBus, IEEE 802.15.4g (SUN), FCC 15.247, ARIB T96/108, and EN 300-220 are supported.
All materials are used well, using Xihua Wenzu crystal oscillator Siward TCXO to maximize the stability of the product.
Measured at least 4,500 meters, test conditions:
1. SF12/125k
2. Use the on-board antenna without external antenna
3. The receiving device and the transmitting device are both 1.5 meters above the ground.
4. Because the relationship of the venue can no longer be tested
5. Transmitting power +14dB
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