Bán Mô đun nhận tín hiệu báo động chống trộm 315MHZ giá tốt nhất

Product parameters: Working voltage (v): dc5v Static current (ma): 4ma Mode of modulation: amplitude (ok) Working temperature: - 10°C~+ 70°C Reception sensitivity (dbm): - 105db Frequency of work (mhz): 315,433.92 mhz (266-433mhz frequency segment optional) Size (lwh): 30x14 x 7mm Product characteristics: The super-regenerative receiving module uses lc oscillator circuit, which contains amplification and shaping, and the output data signal is ttl level, can be used directly to decoder, is very convenient and inexpensive, so it is widely used.Small size and high sensitivity of products;Easy debugging of frequency points and short supply cycle;The high frequency receiving module is the most widely used wireless remote control market. the receiving module has a wide receiving bandwidth. it is usually ±10mhz. it is usually transferred to 315mhz or 433.92 mhz when it is out of factory(If special requirements exist, the frequency range is 266 mhz~433 mhz.)。The receiving module is usually dc 5 v-powered and the voltage can be adjusted with special requirements. the voltage range is 3~8 v. The static working current of the receiving module is 4 ma when it is out of factory. if special requirements exist, the minimum current can be adjusted to 1.5 ma, but the receiving sensitivity will be reduced.The output of the receiving module is noise-free when out of factory. if there is special requirement, it can be changed to noise-free output, but the receiving sensitivity will be reduced. Ant antenna terminal, vcc power positive pole, data output, gnd power negative pole The receiving module has four external interfaces, which are represented in english. "Vcc" means the positive pole of the power supply, "data" means the output, and "gnd" means the negative pole of the power supply. Antennas of 50 ohm 1/4 wavelengths should be attached before use and should be straight to achieve optimal reception, wavelength = light speed/frequency