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RobNordic
2025-07-20 14:43:24
I used this relay as a timer on Lionel train display. My gateman is hooked up to a short piece of track, so he would toggle in/out in between the trucks of the cars. I used this relay with 0.7s delay using the P1.2 mode, so that it would trigger when the first car went by and reset the timer as the remaining cars went by. Worked perfectly. Now my gateman comes out when the first car comes by and stays out until the last one passed by. Very happy with this purchase.Programming:A bit awkward, but it works. I had to read the manual a couple times to get the programming of the time correct. Overall though, there are a lot of options, this is an extremely flexible design. My only gripe is that the instructions are not printed. In case this listing is ever removed, I saved the instructions in a text document.Power:For power, I hooked the 18VAC from the train accessory into a KBP310 bridge rectifier, which yielded 15VDC. I then added a 470uF capacitor. Note, if the capacitance it too low, the unit will not power up.Trigger:I ran the 18VAC train accessory power into the "Trigger" input. I ran the ground trigger from the track to the "GND_t" input. No optocoupler needed. Nice. On the output, I ran track ground into the COM and the NO (normally open) output to the gateman. So when the unit is triggered, the relay will close, the gateman will be grounded, and the gateman will come out (assuming you hook up power to the side of the gateman).
Sam
2025-06-12 12:34:56
The media could not be loaded.
Mike S
2025-06-07 09:51:31
This is an excellent and ridiculously cheap timer for the features provided. Yes, the instructions are poorly translated but there are tutorials online and in the comments here, and you should have no issues. What I didn't find anywhere was the quiescent current draw of the device, so I measured. I'm using it to trigger an alarm siren in a remote location, powered by a 7Ah 12v SLA battery. With the display on, 27.1mA. In C-P mode the display goes off after 5 minutes (the device remains on) and the current draw drops to 5.8 mA. This should give me a month to drain 5Ah of battery capacity. Note that C-P mode is not stored, so if the device is powered down you will have to reset it. I am actually a little shocked that this thing costs only about $6.
P.F. K.
2025-05-12 17:18:57
I like this timer, it seems usable for many situations, many probably past my needs. Some uses I might just invent for the fun of it. The only thing I miss is a good manual explaining the programs in plain English. So I wrote my own:* Press the set button for a few seconds to then use the up/down buttons to select the program you need. Press the set button shortly to cycle to the various OP(en) and CL(ose) timers and LO(O)P counter. OP(en) timers can be programmed in increments of a second, CL(osed) timers can be programmed in increments of 1/10th of a second.* The trigger circuit (Trigger and GND_T connectors) is galvanically separated from all circuitry by means of an opto-coupler wih a 2.2K resistor in series. While the board needs at least 6V, the trigger is activated with voltages as low as 1.5V over the Trigger and GND-T pins.* WARNING: Although the relay states it can handle up to 250V the circuit board is not designed well enough to safely handle anything above maybe 48V. (It is missing it's air gaps to make it safe.)Abbreviations used in display:P -> ProgramOP -> Open - no power to relayCL -> Close - relay is poweredLOP -> Loop - number of cycles turning off and on before staying off.Abbreviations used on boardCOM -> Common wire - put power to this wire to then put your load/device on NC or NO.NC -> Normally Closed - when the relay is not powered this contact is closed.NO -> Normally Closed - when the relay is not powered this contact is open.Available programsP1.1: Run once for CL seconds after power has been applied to trigger.P1.2: Run for CL seconds each time power has been applied to trigger.P1.3: As 1.2 but turn off when power is re-applied to trigger within the countdown time.P1.4: Run once for CL seconds but there is no power to trigger needed.P2.1: After applying power to the trigger delay for OP seconds, then run for CL seconds.P2.2: After applying or removing power to the trigger delay for OP seconds, then run for CL seconds.P3.1: Cycle on and off for OP and CL seconds and LOP cycles when power to trigger is applied momentarily or permanently, restart cycle in "on" phase when power to trigger is re-applied during "off" phase, stop cycle when power to trigger is re-applied in "on" phase.P3.2: Cycle on and off for OP and CL seconds for LOP cycles without the need to put power to the trigger.P4 : Run when power is put to trigger and continue for CL seconds after power has been removed from trigger.Note* The 5v USB connector can be used for programming/exploring but most programs won't run as the trigger port can't be self-powered by the board's 6.0~30V input. However, and I have not tried this, but I believe that if you bridge diode D2 and voltage regulator U3 you can have a complete 5V 500mA project going from a standard 5V USB cable.
ferminator
2025-05-04 12:55:25
Good and cheap timer. But a little complicated to program. But you get the hang of it after watching you tube video about this device. Its very useful.
Ricardo Rotes
2025-04-01 11:16:17
Funciona bien
Tjs
2025-03-02 15:32:15
I have a bunch of animated Halloween decorations with the dreaded sound sensors that don't work for 💩 I wire the Try Me plugs into the relay and set them up to trigger them every minute or so. I use the P3.2 settings for this purpose. The programming instructions are in the product description.
Grant
2025-02-18 09:51:56
Instruction are on you tube and are confusing but works
Dennis B
2024-12-21 15:24:10
Handy little circuit, once you figure out how to set it up. Thankfully there is a video out there somebody made. Only issue I have is the terminal blocks. So difficult to connect anything, they don't expand much, and are hard to tighten to the wires unless you are using a single solid core wire.
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