Features: CC1101 Short Rod Antenna Module deliver communication up to 380m with low power consumption (1.8V-3.6V), ideal for outdoor applications and wireless control requiring robust 433MHz connectivity. SPI with 10Mbps speed, this module operates flawlessly across extreme temperatures ( 30-85°C) for industrial. Perfect for electronics engineers, Idevelopers creating smart home automation or industrial monitoring systems requiring stable low power wireless data transmission. Suitable for wireless networking, agricultural or security alarm systems where obstacle penetrating 433MHz signals and supported communication consistent in challenging environments. Light in weight, small in size, convenient for you to store and manage, will not take up too much space Specifications: Component:Metal Size:Approx.28x15mm/1.1x0.59inch Center frequency: 10mW Communication distance: 380m Working: 1.9-3.6V, meeting battery power supply requirements. Package Includes: 1Pc Wireless Transceiver note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.