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| Brand Name : | HUARAY | 
| Certification : | CE, FCC, ROHS | 
| Model Number : | HR-1028 | 
| Price : | negotiable | 
| Delivery Time : | two working days | 
| Payment Terms : | T/T, L/C, Papal, Moneygram, Western Union | 
| Supply Ability : | 80,000PCS/month | 
Technical specification of HR-1028:
| PERFORMANCE | |
| Power Output: | ≤500mW) <customized> | 
| RF Line-of-sight Range: | 2Km@9600bps, 3Km@1200bps | 
| RF Effective Rate: | 1200~38400bps optional, 57600bps customized | 
| Receiver Sensitivity: | -123dBm@1200bps, -118dBm@9600bps | 
| NETWORKING | |
| Networking Topology: | Point-to-point, point-to-multipoint | 
| POWER | |
| Supply Voltage: | 5V DC(customized according requirement) | 
| Transmitting Current: | <350mA | 
| Receiving Current: | <28mA (TTL connect) | 
| Sleeping Current: | <20µA | 
| GENERAL | |
| Frequency Band: | 433MHz(Default), 450MHz~915MHz(customized) | 
| Communication Mode: | Half-duplex | 
| Channel: | 8(Default), 16/32(customized) | 
| Interface: | RS-232/RS-485/USB/TTL optional | 
| PHYSICAL PROPERTIES | |
| Size: | 80mm*45mm*19mm (without antenna port) | 
| Antenna Impedance: | 50Ω SMA (multiple antenna options available) | 
| Operating Temperature: | -35~+75 C | 
| Frequency Stability; | ±2.5ppm | 
Interface definition:
| Pin No. | Pin name | Description | Level | Remands | 
| 1 | GND | Grounding of power supply | ||
| 2 | Vcc | Power supply DC | 5 V | |
| 3 | RXD/TTL | Serial data receiving end | TTL | |
| 4 | TXD/TTL | Serial data transmitting end | TTL | |
| 5 | DGND | Digital grounding | ||
| 6 | A (TXD) | A of RS-485 or TXD of RS-232 | ||
| 7 | B (RXD) | B of RS-485 RXD of RS-232 | ||
| 8 | SLEEP | Sleep control (input) | TTL | Low level sleep | 
| 9 | RESET | Reset (input) | 
Email: jetzhang.rf@gmail.com
TEL/WhatsAp/wechat: 18025358250
WEB: https://www.lora-module.com
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