10pcs QF-RD21 5V Power-off Delay Disconnect Relay Module Timer Delay Switch Module
$67.64
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Specifications
Voltage:5V DC (±1.5V)
Power consumption
Output:Passive output (ie dry contact), relay set of normally open + normally closed output. Do not exceed 10A at most.
Time range:(4 files, selected by switch)
First gear:range 0.2 seconds-30 seconds, accuracy:0.1 seconds
Second gear:range 0.2 seconds – 300 seconds (5 minutes), accuracy:0.3 seconds
Third gear:range 0.2 seconds-30 minutes, accuracy:1.8 seconds
Four gears:range 0.2 seconds – 300 minutes (5 hours), accuracy:18 seconds
Input:Voltage signal, above 1.5V is the effective signal, the current needs at least 0.1mA.
Dimensions:length 70mm * width 25mm * height 20mm
Screw hole:center distance 64.5, aperture 3.0mm
Wiring
V+ module DC powered positive
GND The DC supply of the module is also the reference GND of the signal voltage.
IN signal voltage input, low level below 1V, high level above 1.5V, uncertain in the middle. Up to 30V
Normally open contact of the NO relay
Constant contact of NC relay
COM relay contact common
Instructions
Time range setting
– When the selector switch is placed in the 30 position, it means 0-30 adjustable
– When the selector switch is placed at position 300, it indicates that 0-300 is adjustable.
Adjustment of time value
– Adjustable resistance rotates counterclockwise to the direction of the number to reduce the time, clockwise to the + direction increases the time
Time unit setting
– When the selector switch is placed in the Sec position, the unit is:second
– When the selector switch is placed in the Min position, the unit is:minute
Example
Request a delay of 50 minutes
1. The range is placed at 300 position
2. The time unit is placed in the Min position.
3. Adjust the adjustable resistance to 50 position, adjust to 300, so adjust to 1/5 is 50.
Note:The potentiometer adjustment can also be quickly adjusted with the multimeter voltage file. For example, the range is 30, and it needs to be adjusted to 12, then the voltage can be adjusted to 2.
t=Ut/5*30=2.0V / 5.0V * 30 =12
Ut is the voltage measured by the multimeter, 30 is the range selected by the selector switch, and can also be selected to 300.
Applications
Combined with the travel switch and the inductive switch
1. Timeout automatically closes the door
2. Pipeline product flow monitoring
3. Current flow monitoring such as water flow
4. Other uses
Package Included
10 x QF-RD21 5V Power-off Delay Disconnect Relay Module Timer Delay Switch
Weight | 0.4 kg |
---|
Customers Also Viewed
High-speed Isolation USB To TTL Serial Module Power Isolation Optocoupler Isolation
$15.30Converter BoardAdd to cartOverviewOptical isolation USB to TTL Serial Module Equipped with CH340T USB to serial chip, achieved the power and TTL signal isolation,High-speed and stability, it could avoid the damage of USB and computer blue screen or other issues while use the USB to TTLserial port module, due to improper operation or other external impact on the …
High-speed Isolation USB To TTL Serial Module Power Isolation Optocoupler IsolationRead More
3pcs 3.5mm Plug Jack Stereo TRRS Headset Audio Socket Breakout Board Extension Module
$4.46Converter BoardAdd to cartFeaturesName:Audio breakout board1. TRRS connectors are the audio-style connectors that you see on some phones, MP3 players and development boards.2. TRRS stands for “Tip, Ring, Ring, Sleeve, Inch which reflects the fact that, unlike a standard stereo connector, this actually has three conductors and a ground.3. Some devices use the extra conductor for a microphone …
3pcs 3.5mm Plug Jack Stereo TRRS Headset Audio Socket Breakout Board Extension ModuleRead More
6.5×55 Laser Bore Sighter Red Dot Sight 6.5mm x 55 Brass Cartridge Boresighter Caliber
$20.24Laser BoresighterAdd to cartCaution:Avoid direct eye exposure to the laser beam. Laser radiation is emitted from the aperture.SpecificationHousing Material:BrassLaser Type:Red LaserLaser Wavelength:635~655mmMax Output PowerPower Supply:3Pcs LR41 Batteries (NOT Included)Battery Installation:Positive side facing outwards. Look at your button cell battery, you will see inch+inch on the flat side commonly, which means positive. And the other slightly rounded side is …
6.5×55 Laser Bore Sighter Red Dot Sight 6.5mm x 55 Brass Cartridge Boresighter CaliberRead More
AD584 Voltage Reference 2.5V/5V/7.5V/10V High Precision Reference Source for Voltmeter Calibration
$32.36RF amplifierAdd to cartSpecificationInput voltage:15VOutput voltage:2.5V/5V/7.5V/10VAccuracy:0.0001Warn floating:15ppm/→Size:5*5cm(not included SMA)Package included1 x AD584 Voltage Reference 2.5V/5V/7.5V/10V High Precision Reference Source
5pcs LilyPad MCP9700 Temperature Sensor Module
$16.04Sensor & Detector ModuleAdd to cartDescriptionDetecting temperature changes has never been easier. The MCP9700 is a small thermistor type temperature sensor. This sensor will output 0.5V at 0 degrees C, 0.75V at 25 C, and 10mV per degree C. Doing an analog to digital conversion on the signal line will allow you to establish the local ambient temperature. Detect physical …
76M-108M 2-channel FM Transmitter Board Stereo Wireless Audio Transmission Transmitter Module
$33.20Other Module BoardAdd to cartDescriptionTwo-channel stereo FM transmitter moduleWorking voltage:DC 3V-16VWorking current:17mASize:49mm*31mmFunction description2-channel FM stereo transmissionPower-off memory functionworking frequency displayInput volume and transmission frequency are adjustablesupport wide voltage supplyworking current, small emission efficiency, high power supply, durableRestore factory settingsultra low back noiseInstructions for use– Key:short press, frequency reduction, 0.1MHz;+ key:Short press, increase the frequency by 0.1MHz, long press, restore …
80x50x20mm Corrosion Resistant Aluminum Split Body Aluminum Box Enclosure Case for Electronic DIY
$14.16Electronic Accessories & SuppliesAdd to cartFeaturesHeavy gauge extruded aluminum construction | Easier for drilling, soldering, screwing, problem fixing.Excellent electromagnetic shielding performance;Front and back panels and fasteners are included.Heavy gauge extruded aluminum construction.Excellent electromagnetic shielding performance.Built-in grooves for holding circuit board.Corrosion resistant, lightweight.Durable in use.Great for electronic projects, power supply units, student projects and amplifiers, etc.SpecificationMaterial:extruded aluminumColor:blackSize:80x50x20mmPackage Included1 x 80x50x20mm Enclosure …
4000Peak Power inverter DC12V To AC220V Power Converter Car USB Charger inverter Modified Sine Wave
$157.94InvertersAdd to cartPower InverterFeature– The power inverter can convert DC12V to AC220.– Overload, over temperature, short-circuit, low voltage, over voltage protection.– Stable performance and precise output voltage.Built-in cooling fan with low noise.– Comes with a car charger and a pair of crocodile clip, convenient to use.– Perfect for television, DVD player and other household appliances.Specifications– Color:Black– Frequency:50+/-3Hz– …
Reviews
There are no reviews yet.