Davreb Telecomm

INDIUM PHOSPHIDE (InP) WAFERS are semiconductor materials made of indium phosphide, a compound semiconductor that is widely used in high-frequency and optoelectronic applications. Due to its efficient electron mobility and direct bandgap properties, InP is favored for devices such as:

High-speed electronics
Laser diodes
Photodetectors
Telecommunications applications, including optical fiber communication
We offer the following InP Wafers:
Undoped InP Wafers: These are pure InP with no intentional doping, used in various applications where intrinsic properties are required.
N-type InP Wafers: Doped with donor impurities (such as tellurium) to increase electron concentration, useful in transistors and high-speed electronics.
P-type InP Wafers: Doped with acceptor impurities (such as zinc) to create holes in the semiconductor, used in light-emitting devices and other optoelectronics.
InP Substrates: Used as a base for growing other semiconductor materials in heterostructures for various applications.
InP Membrane Wafers: Thin layers of InP used for specific applications, including applications in flexible electronics and advanced photonic devices.
InP-based Quantum Dot Wafers: Engineered to create quantum dots that can be used in photonic and optoelectronic devices for enhanced performance.

Wavetel Hybrid IPPBX HG100 is a Multi-function Integrated Service Switch System with All-in-one solution. It applies TDM, VoIP, advanced and soft-switch technology, and it could also be used as trunk gateway or signaling gateway. HG100 provides multiple types of interfaces including Ethernet, FXS, FXO and E1, so that it could work with IAD, PBX, analog phone, IP phone, soft phone, Fax, POS, etc. HG100 can be interconnected with third-party gateway, soft-switch or IMS through SIP and other agreements. At the same time, it can also be interconnected with PSTN or traditional PBX through SS7, PRI, etc.

G7-H2 Wireless Temperature Humidity Sensor System
With G7 temperature humidity wireless sensor and Base Station, you can start monitoring your premises environmental condition online.
Wireless sensor G7 transmits measurement to Base Station via wireless signal. Base Station collects all the wireless sensors readings and uploads to central server in interval via Modbus protocol.
G7-Centre App receives data from Base Station over Internet or LAN.
G7 Client App for Windows10, iOS, Android displays and stores all the incoming data in computer/tablet/smartphone for data analysis. By monitoring and understanding how environmental changes, you can adjust your air conditioner or heater to save energy and money.
[Technical Specification]

G7 Wireless Sensor
Temperature Range: -55 125 C (- 0.5C )
Humidity Range: 1 100%RH (- 1% )
Transmission Interval: User Programmable 5s 4 hours
Sensor ID: Unique 8 digits
RF Wireless: 433MHz, 4.8Kbit/s
RF Power: 10dBm
Wireless Distance: 1200 meter (unblock)
Operation Rating: 80mA (data transmission)
Standby Rating: 3.0uA (sleep mode)
Operating Voltage: 2.6~3.6V DC
Battery Life: Average 1~2 year
Dimension: 80 x 80 x 28 mm
Extended Battery Life: Average 4~5 years
Dimension: 115 x 90 x 55 mm
Base Station
Protocol: Active
Modbus TCP
Network Port: 10/100M Ethernet
Data Packet: Instant on incoming data of connected sensors
RF Wireless: 433MHz, 4.8Kbit/s
RF Address/Band: 255/15
Operating Voltage: 5 ~ 20V DC
Rating: 130mA
Operating Temperature: -35 ~ 75 C
Dimension: 70 x 65 x 35 mm
[Applications]
* water pipes network real time monitoring - water in and out temperature
* oil/gas pipes network, pump stations
* underground water level real time monitoring
* environmental monitoring system - wind/temperature/humidity/CO2/pressure
* remote Industrial equipment monitoring
* rural equipment monitoring e.g. power plant, antenna tower
* measuring equipment data capture and report via Wi-Fi
* food chain, storage, transport industry, building management
* agricultural, farming, laboratory, medical industry