QF-RD21 5V Power-off Delay Disconnect Relay Module Timer Delay Switch Module
$10.92
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
1 x QF-RD21 5V Power-off Delay Disconnect Relay Module Timer Delay Switch
Weight | 0.04 kg |
---|
Customers Also Viewed
5pcs RS232 to TTL Serial Converter Module DB9 Connector MAX3232 Serial Module with Cable
$21.38Converter BoardAdd to cartFeatureIt is widely used in radio modification, phone flash, GPS, vehicle detection, DVD flash, hard disk repair set-top box upgradeIt can be used to program STC MCU, NXP MCU, Renesas MCU, STM32 MCU, N+-2EC MCU CommunicationPort:TX RX VCC GNDChip:domestic MAX3232Package includes5 x Serial Module5 x Cable
Original JYETech 13805K DSO138mini DIY Digital Oscilloscope Kit SMD Pre-soldered with Case
$37.91DIY Electronic KitsAdd to cartDSO138mini brings in the following improvementsBetter structure and smaller size. The bulky pin-headers connecting the LCD and main board in old DSO138 has been eliminated. The soldering of these pin-headers has being found problematic for beginners.USB or battery powered. This makes the scope much more convenient to be used as a portable device. New version …
Original JYETech 13805K DSO138mini DIY Digital Oscilloscope Kit SMD Pre-soldered with CaseRead More
CJMCU-2112 CP2112 Evaluation Sensor for CCS811 Debugging Board USB to I2C Communication Converter Module
$16.67Sensor & Detector ModuleAdd to cartFeatureDirect connection to PC via USBDirect connection to host system via I2CSimple software GUI for easy setup and data loggingDetermine the effects of Temperature & HumidityIntelligent algorithms to output TVOC / eCO2 levelsPackage includes1 x Sensor Module
3 Pcs Red Acrylic Wall Mounted Protective Case Support Cooling Fan for Raspberry Pi 4 Model B
$35.10Raspberry Pi & Orange PiAdd to cartDescription– Wall Mounting Available– Red Blue Black Optional– Support Adding Cooling Fan– Compatible With Raspberry Pi 4B– Make of Transparent Acrylic, could check the board status easilyThere is a Protective Film on the board surface, please take it off before using.Package Included3* RED Acrylic Case Kit
5pcs CTS DTR USB Adapter Pro Mini Download cable USB to RS232 TTL Serial Ports CH340 Replace FT232 CP2102 PL2303 UART TB196
$23.80Converter BoardAdd to cartFeatures– This product use CH340 chips, stable performance, fully compatible with USB1.1,USB2.0,USB3.0 , baud rate up to 256 kbps; – Uses:Replace FT232 for Arduiuo Pro Mini Download – With receiver indicator,transmitter indicator, and power indicator.– Chip:CH340C– Compatible with PRO MINI download port– Board size:18mm x 30mm(Does not include USB ports and pins)– Supports the following …
10Pcs XH Pitch 2.54mm Single Head 4Pin 4Way Wire To Board Connector 15cm 24AWG with Socket
$6.55Electronic Accessories & SuppliesAdd to cartFeatureType:XH2.54 Single Head WirePin Number:4 PinWire Gauge:24AWG Pitch:2.54mmLength:15cmQuantity:10 Sets(10Pcs Single Head Wire + 10Pcs Socket )Note:the cable color may have different.Package included10 x XH2.54 Single-Head 4Pin 4Way Wire To Board Connector10 x Socket
2.4G Wireless Remote Control Module Transmitter and Receiver Module Kit Transmission Reception Communication 6 Channel Output
$8.26Smart ModuleAdd to cartTY24D-TX is the transmitting module, TY24D-RX is the receiving module. The transmitting module only needs to provide 3.3V power supply and transmitting button and one LED as the transmitting status indication. The output port corresponding to the receiving module can output the level signal, and the module has the output status. Select to select the …
2M*45cm Window Film Privacy Static Cling Stained Glass Sticker Home office Decor
$30.50PlasticsAdd to cartSpecificationsMaterial:PVCSize:45cm X 200cmFeatures– Energy-saving and environmental protection. No gum paste, paste can be repeated.– Deadening UV intrusion, protecting indoor objects fading and aging.– Filter light and reduce glare, protect the skin and vision.– Easy to mount and clean.How to use1. First clean the surface of the pasting position, pasting surfaces should be smooth, not be …
2M*45cm Window Film Privacy Static Cling Stained Glass Sticker Home office DecorRead More
Reviews
There are no reviews yet.