Quality timers since 2005

Custom timers without the design costs.
 Powered by Purple

Made in USA
Email for any questions before or after ordering: greg@curioustech.net  PayPal account email address is assumed same as discussions.

Units are tested and shipped within 24 hours if possible.
Low cost shipping anywhere ($2.60 US, $9.50 Canada, $13.50 International) with over 8000 units sold around the world.
Ask about bulk discounts, starting at 10 units.
Unlike generic consumer 555 timer relays, these are microprocessor controlled electronic timers designed for versatility, allowing for precise timing and complex, customized logic.

Important: These are the only consumer MOSFET switch timers so they are silent, never wear out, can switch high current, are extremely efficient and can run at a very wide voltage range.  However, they are not designed for any specific load.  Inductive loads (relays, solenoids, motors) require a flyback diode (free with request) to ensure proper function, with diagrams to explain hookup.

Not sure what you need?  Describe the application and get the perfect timer. Easy as that.

Standard option samples:
1 Cyclical 7 Delay-on-break
2 Timed to off 8 Custom
3 Timed delay 9 Analog Detect
4 Delay-on-make/Timed On 10 Servo control
5 D-O-M/D-O-B 11 Trigger + lockout
6 Negative pulse  
Pile of timers
TMR-1  7.6A or 30A  $12.95-$14.95     #1 seller
Positive switching.  (For negative switching see TMR-3)

2.4-28V quiescent current:  480µA run / 70µA idle.
2.0-5.5V quiescent current:  48µA run / 4.5µA idle.
7.6A or 30A max continuous current (10A/100A pulse) for each model.

Up to 3 inputs, individually configured for +/-/pulse trigger, switches, buttons, or voltage level.

Over-current/Thermal protection. No reverse polarity protection.  Use a diode if necessary, but voltage requirements will be higher.

Not user programmable.  Programming must be requested before ordering.

Factory programmed for cyclical or triggered, from microseconds to hours.  LED normally is on when output on, blinking when timer running.  Customization or removal may be requested.

 1 hour delay, loop with different on and off times,
 Tap button to turn on/off, on 15 minutes after ignition off.
 Strobe light. Switchback. Scavenge pump timer. Power saver.

Heatshrink and waterproofing (acrylic/silicone conformal) may be requested free.
Timer 1 subminiature 7A 5V 12V 24V
Switching Current
(back) TMR-1-6A-5V
Standard hookup diagram to a relay with power switch or trigger button (green will likely be white or yellow)
TMR-2  Programmable 7.6A or 30A  $14.95-$17.45
1 in  / 1 out programmable versatile SuperTimer. 3V 5V 9V 12V 24V DC

Note: New 2015 models have larger buttons, and increased to 30A with optional crystal on rear.  Small button models have no crystal.

   5V = 1.8~6.0VDC  45µA quiescent
 28V = 2.4~28VDC  70µA idle (XT=80µA run / 40µA idle) quiescent
   XT = Crystal controlled.  No crystal = +/- 6s per hour.
   Negative switching by request only (more efficient)
Prototype (blue LED): 130µA run / 68µA idle @12V

For older models, see programming at bottom of page.

2015+ EEPROM programming (unless custom):

Setting 1: 0-255 time off
Setting 2: 0-255 time on
Setting 3: 1-255 multipier for time off
Setting 4: 1-255 multiplier for on time
Setting 5: Modes (cycle, input pulse, run-thru)
Setting 6: Setup (invert input, pulse, latch, off-on/on-off)
Setting 7: Extra (min/secs, subtract off from on, auto-start)
Setting 8: LED pulse when running
Timer 2
Black - Ground (zip cord)    NOTE:  All models have wire, but sometimes not pictured with it.
Red - Power  (zip cord)
Blue - Input
Separate red/black stripe (30A), white or yellow(7.6A) - Output
TMR-3  7.6A  Up to 24A pulse        $10.45 or $10.95
The smallest tiny timer you'll find.  10mm x 16mm

Lower voltage is suitable for 2-4AA,  3.7V Lithium, 5V USB, 6V, 9V batteries, etc.
Higher voltage for automotive 12V DC applications.

Up to 3 (-) inputs or switches/buttons or 1 (+) input.

Not user programmable.   Programming must be requested before ordering.
Negative switch/sink only of relays, motors, high power LEDs, horns, interior lights, etc.

Factory programmed for cycle or triggered delay from microseconds to hours.

Working examples (TMR-1 or TMR-3):
  One-shot for X seconds.  3-way switch for 3 different times.
  Cycle X seconds on, X seconds off.
  Tap a button to start/tap to stop, hold to learn run time in 0.1 sec increments (up to 99 hours).
Timer 3 micro 7A 5V 12V 
Quiescent Current
Relay hookup example  Power can be switched on negative or positive.
Custom momentary/trigger wires not shown.
TMR-I²C    New

I²C / TTL serial programmable timer

1.8-5.5V  (150µA quescent) or 2.2-17V
7.6A positive (source or 3.3/5.0V) or negative switching
1 or 2 trigger inputs (negative, positive, or specific V range)
1 shot, cyclical, or custom timing options saved to EEPROM.
Direct output and LED control from interface options
LED options: Off / 10ms pulse per iteration or toggle
Timing options in ms, seconds, hours, etc.

3.3 and 5V compatible interface
i2c TTL SPI serial programmable timer
TMR-5  7.6A, 30A, and 3A motor (H-bridge) Digital Timers  $23-$25

2 button 3-digit: 7.6A negative switch (not shown)
3 button 3-digit:  30A negative switch (larger with screw holes)
3 button 3-digit:  3.1A reversable (motor) output
3 button 4-digit:  7.6A

2-28V operation.
Quiescent current: 0.65mA with display off, 11mA on.
1x (1-30V) logic input or 1x analog/voltage + 2 x 5V inputs

Fully custom designed for 1-10 different settings, easy up/down/next adjustments saved to EEPROM, or measuring timing with scroll memory.
0-999 seconds, minutes, hours, milliseconds, down to 1uS or anything within 0-999, 0.00-9.99, 0.0-99.9 for 3-digit.  Mix on secs, with off hours, etc.  Time to build may be several days.

Download 3D Print cases (400KB)

Custom projects and misc.
Timer 5
Note: Prototypes shown (wire missing)  
TMR-M  3.1A H-Bridge Reversible Timer  $11.95
For motor, actuator, solenoid or other reversing polarity needs

  Note: Unfinished.  Wires not shown on these.

3.1A at 2.0~20V DC.  2 inputs (2-20V) or onboard button and LED.
Or 7A 2-28V, and 8.7A 8-24V

Quiescent current: 4
.5µA idle, 70µA+ run.

Can be designed to run a motor for a fixed time when input supplied, and run reversed for fixed time when input removed, cycle, or trigger + delayed + timed, or adjustable options, etc.
Timer M motor reverse control
TMR-D Dual 7.6A outputs  $17.95
2.4~28V DC

2 input, 2 output timer.

Can be used to control 2 devices, relays, solenoids, etc. the same as 2 sngle timers or 2 timers working together.
Dual Timer 12V 2 input
TMR-RF-6A    Negative switch 3-6V,  plus 1-button/LED.
TMR-RF-4x6A Up to 4 Ch 2.5-28V +switch timer + LED.

Email for pricing.

~0.5mA quescent.
1 input on 4x model.

Custom designed timers with 5 remote inputs (Long press, short press, A+B) for start/stop, individual custom timers on each channel, as well as adjustable times set by remote.

Range is about 50 meters.  Wires added and instrctions included.

Also avaiable as non-RF
TMR-4x6A Up to 4 Ch 2.5-28V positive or negative (sink or source) and 1-2 inputs.

Timer RF 1 sink and 4 source 1 and 4 channel RF remote timer
TMR-0 20mA Output New product.  $5.95 
 Designed for very small appliactions.  Extremely energy efficient.

2.0~5.5V DC   4.5µA

2 outputs and 2 inputs, or any combination of 4 I/O.  Can drive small relays, LEDs, servos, or logic I/O.

Micro timer 3V 5V extreme efficiency
AutoCharge  7A 5V New product. 

Charge timer for USB devices.

Probramming is similar to TMR-2, but time on is only in 10 minute increments, and time off is in hours.

When current detection is enabled, it stops charging once battery is fully charged, resetting the timer to the time off duration.

Note, this will not work with most portable power banks which turn off when current drain stops because the AutoCharge device is undetectable.

AutoCharge USB charger timer
Button tap toggles output and cancels timers (will pulse output if pulse mode used, or start/stop in repeat mode).

Programming for TMR-2 (All settings are stored in EEPROM and can be factory programmed, and user programmed at any time)

Units made before April 2013:
   Hold button, LED will off-blink at 5, 10, 15, 20 second intervals. Release after 5 for option 1, etc.  Tap for desired number.
   No input for 5 seconds ends programming. No input disables option (sets to 0).
   Options 1, 2, 3 confirms with blinks: on-time, pause, off-time, pause, multiplier.  Option 4 confirms only option 4.

Units made April 2013 - Dec 2014:
   Hold button, LED will off-blink at 4, 8, 12, 16, 20 second intervals. Release after 4 seconds to view settings.  Release after 8 for option 1, etc.
  Tap for desired number.  No input for 5 seconds ends programming. No input disables option (sets to 0).  LED will blink number entered.

  1. On-timer (0-255)  Timed delay after input ON to turn output ON or pulse
  2. Off-timer (0-255)  Timed delay after input OFF to turn output OFF
  3. Multiplier (1-255) Multiplies on and off timer by number of minutes/seconds.
  4. Mode (See Mode Table)
Mode Seconds Minutes Seconds
Output Pulse
Output Pulse
Normal 0 1 2 3
Input Pulse 4 5 6 7
Repeat 8 9 10 11
Repeat/InPulse 12 13 14 15

On Off Mult Mode Description
10 10 1 0 In-High = 10 sec delay to ON, In-Low = 10 sec to OFF (Default)
   In < 10 seconds = never ON (Delay On Make & Break)
10 20 6 1 In-High = 1 hour delay to ON, In-Low = 2 hour delay to OFF
0 30 1 1 In-High = Instant ON, In-Low = 30 min delay to OFF
    In-Pulse = 30 minutes on  (Delay on Break)
10 0 1 0 In-High = 10 sec delay to ON, In-Low = Instant OFF
     In < 10 seconds = never ON (Delay on Make)
10 2 1 2 In-High/Pulse = 10 sec delay to pulse, In-Low = 2 sec delay to pulse
10 0 1 2 In-High/Pulse = 10 sec delay to pulse, In-Low = nothing
0 10 1 2 In-High/Pulse = pulse, 10 second delay, pulse
10 10 1 3 Same as mode 2 but minutes instead of seconds
1 10 10 4 In-High/Pulse = 10 sec delay to ON, ON for 100 sec
10 0 1 4 In-High/Pulse = 10 sec delay to Toggle
1 60 1 5 In-Pulse = 1 min delay to ON, ON for 60 min
15 2 1 13 Off for 15 mins, ON for 2 mins, repeat while input ON

Example:  Setting delay-on to 5, then selecting display which reads 5, 3, 1, 1
Custom designs are not impossible, but all the timers above are the most versatile on the market today and fit most needs.
Other work in progress:
Custom projects and misc.
Copyright © 2018 Curious Technology