120Vac, 208-240Vac or 12/24Vac/dc, 50/60Hz  ( specify model )

0 to 999 Seconds, Minutes, Hours or Days
( other ranges upon request )

Power line frequency or internal crystal ( 20 ppm )
ON/OFF during count-down or count-up, or ON expiry  ( custom control modes available )
3 digits, 7 segment, Super Bright LED RED  GREEN or  BLUE
( select Large ( 0.56" ) or Smaller ( 0.36" ) LED display digits )

SPST relay, 30 Amp, 250Vac (or custom)

OPTIONAL, piezo, 85dB internal

Automatic with error display and protection
 
Specifications:

Supply:

Timer preset  range:


Time Accuracy:
Control mode:
Display:


Load output:

Alarm buzzer:

Error detection:
series  SDT-2 and SDT-3RT   DIGITAL Programmable TIMER
Output load up to 30 Amp / 250Vac

with  ROTARY control :

1.  TIMER PRESET and "OFF" position
APPLICATIONS:

SAUNA timer control
STEAM BATH timer control
SPA timer control
EVENT TIMER
PROCESS TIMER
Lighting timer control
LED DISPLAY
AVAILABLE
IN ALL COLORS
DESCRIPTION:
Electronic, digital programmable INTERVAL timer ( with or without Delay ).
This timer can be preset by rotating the knob on the face. When activated it will control the output high power relay
( on board ) that can be wired  to control the  load..
The 3-digit LED display shows both, the preset and the current count-down or count-up.
This timer can also be used a counter of external events. UP or DOWN counting.
The relay may be replaced with a Buzzer.
Models available for 120Vac, 208-240Vac, 12V or 24V AC/DC, 50/60Hz.

Other Features:
Available upon request for ranges in Seconds, Minutes, Hours or Days.
DIMENSIONS:

Face:  Stainless Steel or
Metal, flush or semi-flush with Lexan decal.
Body: ( W x H x D )
1-3/4" x 2.75" x 2.5"
45mm x 70mm x 64mm
INSTALLATION example in Box
(SDT-2 shown ):

Designed to fit in a 1-Gang
electrical box or in a panel.
Face plate will sit flush with the wall.
Typical contents of a standard
SDT-2 timer set ( with Black or Grey label ).
TYPICAL WIRING EXAMPLES
Ordering Example:

SDT-3RT-HP-120-56-RM0M60-R056BLK
Digital Timer with rotary control. Display Super RED, 0.56" high digits.
Timer preset range: 0 to 60 minutes.
1 High Power relay (30 Amp max). 120V power line supply.
INSTALLATION EXAMPLES
Flush in wall
SDT-3RT and SDT-3PB series
Semi-Flush in wall
SDT-3RT and SDT-3PB series
Flush in 1-gang box
SDT-2 series
Semi-Flush in 1-gang box
SDT-3RT and SDT-3PB series
COMPLETE NUMBERING SYSTEM FOR SD series CONTROLLERS :
( click below to download PDF document )
Model with Alarm buzzer.
Wiring with contactor for Very High load Power
Simple wiring for loads
up to 30 Amp max.
Simple wiring with electrically
isolated relay contacts for
loads up to 30 Amp max.
NOTE:  CUSTOM MODIFICATIONS AVAILABLE FOR ALL MODELS
Face color AVAILABLE
in Grey,  Black or Small Grey
CUSTOM TIMER RANGE PER REQUEST
Toll Free:  1- 866- 829- 4253
E-mail:  info@keracontrols.com
E-mail:  info@keracontrols.com
Typical contents of a standard
SDT-3RT timer set ( with Black or Grey label ).
KERA Technologies Inc.    Toll Free:  1-866-829-4253