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Specifications
- Brand Name: JIAQISHENG JQS
- Compatible Brand/Model: None
- Origin: CN(Origin)
- Model Number: ESP8266 5V WiFi relay module Things smart home remote control switch p
ESP8266 5V WiFi relay module Things smart home remote control switch phone APP ESP-01 relay module
0.73
–
1.72
$
667
orders
/
72
reviews
Price history
- for 3 month
- for half a year
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Customer Reviews
M***c
January 7, 2021
1) The description does not include information of what pin controls the relay. Man has to find out himself, that it is the GPIO0. 2) The title and description talk about 5V power supply, but it says also "supports 3.7v-12V DC power supply (3.7V lithium battery" later in the description. What is true? The used voltage regulator LD1117 needs Vin of min 4.75V to work properly. However, it also worked with 4.2V. 3) Last, but the most serious problem is the fact, that ESP8266 sends HIGH for cca 100ms to GPIO when booting (battery connected). This causes the relay to switch. If used for garage door opening for example, the door would already start to open!!!
F***r
January 6, 2021
Everything OK
Anonymous