10pcs QF-RD21 5V Power-off Delay Disconnect Relay Module Timer Delay Switch Module
Shipping:Standard Shipping about 10-25 business days
Voltage:5V DC (±1.5V)
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
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
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
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.
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
10 x QF-RD21 5V Power-off Delay Disconnect Relay Module Timer Delay Switch
Customers Also Viewed
Smart WiFi Garage Door Opener Remote Controller Smart Switch Controller Voice Control App Control Compatible with Alexa Google Home$93.14SwitchesAdd to cart
DescriptionEasily open and close the garage door by converting the existing Wi-Fi network and garage door opener into a single integrated smart device that can be controlled and monitored from anywhere.Activate your garage door opener by attacking on a mobile app, or by issuing a voice command to your for Alexa or for Google Assistant …
Smart WiFi Garage Door Opener Remote Controller Smart Switch Controller Voice Control App Control Compatible with Alexa Google HomeRead More
DIY LED Light Set Kit for Lego 10248 for F40 Car Building Blocks Lighting Parts$29.15DIY Electronic KitsAdd to cart
SpecificationsMaterial:PlasticFit:for Lego 10248 F40Interface:USBNote:Please allow a little color variation for different display setting. The pictures are only for reference, please make the object as the standard. Thank you for your understanding!Package included1 x LED Light Kit (car model Not included)
220-240V 3.4KW Mini Electric Tankless instant Hot Water Heater for Bathroom Kitchen Washing$170.09Laboratory Heating EquipmentsAdd to cart
SpecificationsMaterial:Stainless Steel ShellColor:WhitePower:3.4KWCurrent:10AVoltage:220-240VWaterproof Grade:IPX4Temperature:35-55℃Size:107*35*160mmFeatures– This is a water heater for the application of changing the cold water into hot water and it will meet your various needs such as used in kitchen, bath room, public restroom, etc.– It is a high efficient water heater with compact size to produce the hot water very quickly.– LCD …
220-240V 3.4KW Mini Electric Tankless instant Hot Water Heater for Bathroom Kitchen WashingRead More
CBB61 5Pcs 16UF Starting Capacitance 450V AC Fan Capacitor CBB Motor Run Capacitor$30.40Module ComponentsAdd to cart
Features1.Use polypropylene film with excellent electrical properties as the medium, and vaporize the metallized layer as the electrode under high vacuum conditions; 2.Use High-quality epoxy resin potting material is filled and sealed; the product has stable capacity, low loss, high pressure resistance, and good self-healing.3.Application:air conditioners, refrigerators, washing machines, electric fans, ovens, etc.SpecificationModel:CBB61Shell Material:ABSLine length:10cmShell …
CBB61 5Pcs 16UF Starting Capacitance 450V AC Fan Capacitor CBB Motor Run CapacitorRead More
There are no reviews yet.