秒速快3Detection alarm by the controller, detectors, signal cables and other components, the product by the National Fire Electronic Products Testing Center of qualified inspection; detection components within the detector usin
In traditional local area networks or wide area networks, long-range and low-power consumption can only be one of two options. However, with the smart city and smart agriculture, the overall deployment of animal husbandr
秒速快3Internet of Things technology is defined as: through the RFID (radio frequency identification) (RFID), infrared sensors, global positioning systems, laser scanners and other information sensing devices, according to the
With the full deployment of smart cities and the development of smart, perceptual and interconnected cities, more and more fragmented terminals in cities require low-power and long-distance transmission access networks.
The rapid rise of the Internet of Things in China benefits from several major advantages of China in the Internet of Things。 First, as early as 1999, China started researching the technology of core sensor network of the
Wireless communication modules are widely used in vehicle monitoring, remote control, telemetry, small wireless networks, wireless meter reading, access control systems, cell paging, industrial data acquisition systems
Three-phase rail table using the latest technology ADE7169F16 single-chip system-on-chip design completed. The ADE7169 integrates a high-precision metrology unit module and an 8052 MCU and its peripheral modules.
Rail meter with LCD display, measurement of electrical energy and other electrical parameters, clocks, tariffs and other parameters can be set, and with the power pulse output. Available RS485 communication interface and
Three-phase electronic energy meter installation requirements
1, the measurement point should be located at the demarcation point of property, the installation point can not have corrosive gas and strong shock and vibra
Single-phase electronic watt-hour meter through the user supply voltage and current real-time sampling, using a dedicated energy meter integrated circuit, the sampling voltage and current signals are processed
Energy meter can measure the spectral range of 250-410 nm, the best sensing peak spectral output of 330 nm。 The amount of additional incident light when exposed to the exposure cycle, the relative value is taken into acc