Description
The VT-ITX-433M module is very low power consumption ASK transmitter for operation in the frequency band 433MHz. The module offers a high level integrative and needs no external components.
There is a power down feature to save power source life and a divided clock output.
Key Features
Center frequency is 433.92MHz
Modulation is ASK
High efficiency power amplifier 10dBm
Fully integrated frequency synthesizer
Low supply current typ.14.2mA 3.0VDC
Power down mode with very low power consumption
Typ.0.3nA 3.0VDC
Supply voltage range 2.1~4VDC
Small size 12.0×15.0mm
Application
Keyless entry systems
Remote control systems
Garage door openers
Alarm systems
Security systems
Wireless sensors
Specification
Testing condition:Ta=25°C, VCC=5.0V
Parameter Value Condition/Note
Center Frequency 433.92MHz
Modulation ASK
Output Power 10dBm
Transmit Current 14.2mA 3.0VDC
Distance 700 meter Open area; Max output power; 1kbps Radio Date Rate
Operate Humidity 10%~90%
Operate Temperature -25℃~75℃
Power Source 2.1~4VDC ±100mV
Antenna 50ohm
Size 12.0×15.0mm
Note:
1. Noted that lower input voltage causes of lower output power.
2. Noted that the operate temperature out of range -25℃~75℃ will influence the center frequency.
3. Be sure to use a match antenna and mount it in the right way.
4. The environment will influence the communication disdance much.
Pin Description
Pin Type Description
VCC Supply Voltage DC 4.5~5.5V
GND GND Connect to the system ground
DATA Data input
EN Power Down Input Enter the power down mode
GND GND Connect to the system ground
ANT Antenna Antenna interface 50ohm
Dimensions
Typical Application
Antennas
We offer many kinds of antennas. We can design a matching antenna for specific conditions. Some of the antennas are show on the Tab 1.
Tab 1 Antenna
Spring Antenna
Small size
Low cost
Easy to embedded
SMA Plastic Antenna
Medium size
Low cost
High gain
Sucker Antenna
High gain
Have sucker
Easy to fix