ขาย yGnG 1X อัลตราโซนิก Ule Jsn-Sr04T & 1 ชิ้น Sim900A Sim900 Mini V4.0 เครื่องส่งสัญญาณข้อมูลไร้สาย ราคาที่ดีที่สุด

set2: 1 x SIM900A Wireless ule & 1 x ule 1, the ule performance and stability, measure the distance accurately. Can and abroadSRF05, SRF02Such as ultrasonic ranging ule comparable.ule high-precision, blind (25cm), stable range is the success of this product to the market a strong basis. The onboard two set power supply interface VCC5 5 V power supply, VCC4 interface, 3.5-4.5 V power supply, optional power on self start (default) and control start.The onboard SMA (standard) and IPXmini antenna interface, SIM900A interface reserved reset.The size of the ule is 49 * 50. The computer can give early computer debugging USB ule power, a very large amount of data under the condition of the recommended current more than 1A. Standby dozens of MA data can be set to provide dormancy, dormancy of 10MA low power. Support 2, mobile phone 3,4G card. Lead length 2.5M 1, Small size, easy to use; 2, Low voltage, low power consumption; 3, High measurement accuracy; 4, Strong anti-interference; 5, Integrated closed water with a line probe for wet, harsh measurement occasions. 1, the horizontal range; 2, obstacle avoidance, automatic control; 3, Objects close, there is perceived 4, traffic control; 5, security, industrial control; 6, Artificial intelligence, teaching and research The control interface of each pin description: GND-GND SIMR SIM900A RXD, TTL level, cannot be connected directly to the 232 level SIMT SIM900A TXD, TTL level, cannot be connected directly to the 232 level RST-SIM900A reset, active low VCC_MCU when the SIM900A ule and 5 V TTL level communication, this pin is connected to DC 5 V; When the level of communication of SIM900A and 3.3 V TTL, this pin is connected to DC 3.3 V. VCC5-DC 5 V input. VCC4 -DC3.5-4.5 input Onboard Resources: Serial port circuit (with protection) Antenna interface circuit (SMA bend port female) SIM card circuit (flip SIM slot) 4 * 3.5 fixture hole 4 pcs SIM900A serial port output Colour:black/blue Material:metal+PC/metal + plastic Package Contents: 1 x SIM900A Wireless ule 1 x Power Cable 1 x Antenna 1 x ule Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.