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
Geekwrom HD 3.5 inch TFT Display Shield 800×480 for Raspberry Pi 3B 2B + Acrylic Matching Case Kit
$121.30Raspberry Pi & Orange PiAdd to cartGeekwrom HD 3.5 Inch TFT Display Shield 800×480 For Raspberry Pi 3B 2B + Acrylic Matching Case KitHD 3.5 Inch TFT Display Shield 800×480 For Raspberry Pi 3B 2BFeatures– Demensions:85mm*56.5mm;– Resolution:800 x 480, 3.5 inch;– 267ppi High PPI display screen;– 11ms High Response Time(more than 60 fps);– 160° Wide Viewing Angle;– 900:1 High Contrast Ratio;– …
intelligent Screen Solar Pure Sine Wave Power inverter 1200W-6000W DC To AC 110V 120V Converter
$121.49InvertersAdd to cartWatt 1200W Voltage 12V Type Single digital display / Watt 2200W Voltage 12V Type Single digital display / Watt 3000W Voltage 12V Type Single digital display / Watt 3000W Voltage 24V Type Single digital display / Watt 3000W Voltage 48V Type Single digital displ
500W Aquarium Submersible Stainless Steel Heating Rod Adjustable Heater
$48.59Solar CollectorsAdd to cartDescriptionMaterial:Stainless SteelColor:SilverPlug:US PlugVoltage:220-240V 50HzWattage:500WTemperature range:16-32°CCable Length:120cm/47.24inch(appr.)Heating Rod Length:41cm/16.14inch(appr.)FeaturesMade of stainless steel material, anti-rust, useful and durable.Double insulation & waterproof.Keep the water temperature steady.Suitable for aquarium:500L (for reference only).Simple adjustment and easy to read temperature indicator.Easy to install with 2 strong suckers (mounting distance of 2 suckers is about 9.5cm).Adjustment knob allows you to adjust the …
500W Aquarium Submersible Stainless Steel Heating Rod Adjustable HeaterRead More
5pcs JoyStick Module Shield 2.54mm 5 pin Biaxial Buttons Rocker for PS2 Joystick Game Controller Sensor
$14.30Other Module BoardAdd to cartFeaturejoystick joysticks standard interface module electronic building blocks and 2.54mm pin interface leads.Phillips is a two-way rocker 10K resistor, with the joystick in a different direction, tap the resistance vary. This module uses a 5V supply, the original state X, Y readout voltage of 2.5V or so, when pressed with the direction of the arrow, …
4Pcs Geekcreit Ultrasonic Module HC-SR04 Distance Measuring Ranging Transducers Sensor DC 5V 2-450cm
$9.83Sensor & Detector ModuleAdd to cartDescriptionWorking Voltage:5V(DC)Static Current:Less than 2mA.Output Signal:Electric frequency signal, high level 5V, low level 0V.Sensor Angle:Not more than 15 degrees.Detection Distance:2cm-450cm.High Precision:Up to 0.3cmInput Trigger Signal:10us TTL impulseSignal:output TTL PWL signalMode of connectionVCCtrig(T)ech0(R)GNDUse MethodSupply module with 5V, the output will be 5V while obstacle in range, or 0V if not.The out pin of this module is …
1MHz-700MHZ 3.2W HF VHF UHF FM Transmitter RF Power Amplifier for Ham Radio
$50.29RF amplifierAdd to cartApplicationBroadband RF power amplifier for all types of wireless applications, FM shortwave radios remote control toys, digital radio, etc., enter 1 milliwatt (0DBM) maximum output of 3 watts, 15V voltage supply, broadband work 1MHZ to 700MHZ can be work. As a result of well-designed, low end that can reach 35DBM (3W), at 500M, the output …
1MHz-700MHZ 3.2W HF VHF UHF FM Transmitter RF Power Amplifier for Ham RadioRead More
Reviews
There are no reviews yet.