5pcs JK02B 12V DC Delay Relay Module 0-200S Adjustable Delayed Closure Timer Delay 10A NE555
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Very good
Extremely useful little board. Works a treat. If you need very short intervals it is easy to reduce sensitivity of adjustment by bypassing the pot with a resistor albeit losing the long timing capability. BEWARE...The mounting holes are perilously close to the in and out terminals and if you are switching Mains Voltage DO NOT use METAL screws or bolts I used NYLON standoffs. This is for safety and to prevent shorts to the case. It's so cheap one could daisy chain several units to achieve many things. Recommended with due caution.
Physical build quality is reasonable for the price. But time adjustment is unreliable, and I'm unable to set the delay lower than 5-6 seconds, time setting is also unstable at low settings. This might be because the trim pot is a low quality part.
good quick trade. arrived early.
cheap price fast delivery, good customer care service, thank you banggood
works as stated, no problems