433MHz Transceiver 33dBm Long-range Communicator Radio Modbus RS232 RS485 433mhz IoT uhf rf Transmitter Module E90-DTU-433C33

$62.80

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E90-DTU-433C33 433MHz Transceiver 33dBm Long-range Communicator Radio Modbus RS232 RS485 433 mhz IoT uhf rf Transmitter Module RF Parameter Value Remark...

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E90-DTU-433C33 433MHz Transceiver 33dBm Long-range Communicator Radio Modbus RS232 RS485 433 mhz IoT uhf rf Transmitter Module

RF Parameter

Value

Remark

Working frequency

425~450.5 MHz

Default: 433MHz

Transmitting power

33 dBm

About 2W

Air data rate

N/A

Self-adapted baud rate

Test distance

4000 meter

In open and clear air,

with maximum power,

5dBi antenna gain, height of 2m.


Hardware Parameter

Value

Remark

Size

82 * 62 * 25 mm

Without SMA-K

Antenna type

SMA-K

-

Communication interface

RS232 / RS485

Standard DB9 Hole/

3.81 connecting terminal

Baud rate

9600

Baud rate: 1200~115200

Buffer

Unlimited data input

(baud rate≤57600)

Continuous transmission,

no sub-package


Electronic parameter

Min.

Typ.

Max.

Unit

Condition

Power supply

10

12

28

V

-

Transmitting current

-

938

-

mA

33dBm(2W)

Stand-by current

-

31

-

mA

-

Operating temperature

-40

20

+85

-

Operating humidity

10

60

90

%

-

Storage temperature

-40

20

+125

-




FAQ

  1. How often should I have my sewing machine cleaned and serviced?
    A. It depends on how often the sewing machine is used and the type of work done on the machine. Cotton fabrics and thread tend to create more lint buildup on your machine. Servicing and cleaning your machine allows the machine to operate smoothly. Also a machine that has been in storage for some time will require servicing as the lubricants can dry up over time.
  2. Why does the upper thread break?
    A.The needle may be inserted incorrectly or the eye may have sharp edges, the machine is not properly threaded or the upper thread tension is too tight.
  3. Why does the bobbin thread break?
    A.The bobbin may be wound unevenly, the bobbin case could be threaded incorrectly or the bobbin thread tension is too tight.
  4. How come my sewing machine skips stitches?
    A.You may have a bent or blunt needle, the needle is inserted incorrectly or the pressure on the foot is insufficient.
  5. Why do I keep breaking needles?
    A.The needle may be inserted incorrectly, you are pulling the fabric while sewing or you may be utilizing the incorrect size needle or thread for the fabric being sewn.
  6. Why doesn’t the sewing machine feed properly?
    A.The drop-feed knob is improperly adjusted, the pressure on the foot is insufficient or the stitch length knob is set too close to zero.
  7. Why does the fabric pucker?
    A.The upper thread tension is too tight, the bobbin thread tension is too tight or the fabric may be too sheer or too soft.
  8. Why does my sewing machine make loose stitches or loops?
    A.Tension is not properly adjusted.
  9. Why does my sewing machine run heavily?
    A.Machine may need oiling, dirt or lint buildup in the shuttle or dirt and lint between the teeth of the fabric feed dogs.
  10. My sewing machine will not sew. Why?
    A.Cord is not plugged into the electrical outlet or the stop motion knob is not tightened.
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433MHz Transceiver 33dBm Long-range Communicator Radio Modbus RS232 RS485 433mhz IoT uhf rf Transmitter Module E90-DTU-433C33

$62.80