FEATURES:

● with metal shielding, anti-jamming, reserve cpu (STC15F104) position, can upgrade their own secondary development. 
● two selectable differential inputs 
within ● programmable-chip low noise amplifier, a gain of 32, 64 and the optional 128 
● On-chip voltage regulator supplies power directly to the external sensor and on-chip A / D converter 
in the chip clock ● without any external oscillator device, if necessary, may also be used an external crystal or clock 
● automatic power-on reset circuit 
● simple digital control and serial communication: All are controlled by input pins, the chip registers without programming 
● selectable 10Hz or 80Hz of the output data rate 
● simultaneous rejection of 50Hz and 60Hz power interference 
● power consumption (including power supply circuit): 
typical operating current: <1.7mA, shutdown current: <1uA 
● Operating voltage range: 2.6 ~ 5.5V 
● Operating temperature range: -20 ~ + 85 ℃