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General Information
TIME DELAY RELAYS are used to delay an action, control its duration or a combination of these two forms triggered by the supply voltage being connected or removed or again by a contact closing or opening.The most common application is known as ON DELAY. Upon connecting the supply voltage, the selected time commences at the end of which the output is energized. We have several models that can accomplish this, most notably our M1SMT and M1DOM.
Looking for a TRUE OFF DELAY where the output is energized immediately upon connecting the supply voltage. The set delay begins to count down when the supply voltage is removed at the end of which the output is de energized. No other unit in the industry does it better than our B1DFM.
Need help figuring it out? Try our E-Z PICK chart or send us a note.
Notes
B1RF & B8RF
B1RN & B8RN
B1TS & B8TS
B1YD & B8YD
These four items are still available by special order; however, similar units are available in the ''M'' series. For the RF and RM see M3RFM and RNM respectively; for the TS see the M3RTM and the YD's are similar to the M1EYD and EYD/2.
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H.89 W.17.5 D.59 (mm) |
Type No |
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Description |
Dual Function Timer |
Dual Function Timer |
Delay On Operate |
True Delay Off |
Interval |
Delay On Operate |
Multi Function Timer |
Multi Function Timer |
Multi Function Timer |
Function |
Dual (2) |
Dual (2) |
On Delay |
True Off Delay |
Single Shot Interval |
On Delay |
Multi (4) |
Multi (4) |
Multi (6) |
Delay On Operate |
Delay On Operate |
- |
- |
Supply Initiated |
- |
Delay On Operate |
Delay On Operate |
Delay Off |
Delay Off |
Interval |
- |
- |
- |
- |
Interval (Single Shot) |
Interval (Single Shot) |
Delay On Operate |
- |
- |
- |
- |
- |
- |
Symmetrical Off/On |
Symmetrical Off/On |
Interval |
- |
- |
- |
- |
- |
- |
Symmetrical On/Off |
Symmetrical On/Off |
Delay On (contact initiated) |
- |
- |
- |
- |
- |
- |
- |
- |
Interval (Single Shot) |
Time Range |
Multi |
Multi |
Multi |
Single |
Single |
Single |
Multi |
Multi |
Multi |
0.24Secs-10Hrs |
0.24Secs-10Hrs |
0.24Secs-10Hrs |
Secs: 0.5-10, 1-30, 2-60 |
Secs: 0.5-10, 2-60 |
Secs: 0.5-10, 1-30, 2-60 |
Range 1: 0.5Secs-60Mins |
0.5Secs-60Mins |
0.5Secs-60Mins |
- |
- |
- |
Mins: 0.5-10 |
Mins: 0.5-10, 2-60 |
Mins: 0.5-10, 2-60 |
Range 2: 5Secs-600Mins |
- |
- |
Supply Voltage Un/U |
24VAC/DC/110VAC |
24VAC/DC/110VAC |
10.5 to 265 VAC/DC |
24VAC/DC/110VAC |
- |
12VAC, 12VDC |
24 to 240V AC/DC |
12VAC, 12VDC |
12VAC, 12VDC |
24VAC/DC/230VAC |
24VAC/DC/230VAC |
- |
24VAC/DC/230VAC |
24VAC/DC/110VAC |
24VAC/DC/110VAC |
- |
24VAC/DC/110VAC |
24VAC/DC/110VAC |
- |
- |
- |
- |
24VAC/DC/230VAC |
24VAC/DC/230VAC |
- |
24VAC/DC/230VAC |
24VAC/DC/230VAC |
Output |
SPDT Relay |
SPDT Relay |
SCR Thyristor Solid State |
SPDT Relay |
SPDT Relay |
SPDT Relay |
SPDT Relay |
SPDT Relay |
SPDT Relay |
Output Rating |
8A @ 250VAC |
8A @ 250VAC |
700mA |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |

H.89 W.17.5 D.59 (mm) |
Type No |
LART/2 |
LEDF |
LEDO |
LESW |
LEYD/A |
LMMT/2 |
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Description |
Assymetrical Recycler |
True Delay Off |
Delay On Operate |
Delay Off Switch Initiated |
Star Delta Timer |
Multi Function |
Function |
On/Off - Off/On |
True Delay Off |
On Delay |
Off Delay |
7 selectable Dwell & Operate Times |
On Delay, Interval, Recyler,
Switch initiated On, Interval or Off |
Time Range |
Multi |
Single |
Single |
Multi |
Multi |
Multi |
0.1 secs - 100 hrs. |
Secs: 0.5-10, 1-30, 2-60 |
Secs: 0.5-10, 1-30, 2-60 |
0.1-100 Hrs. |
Dwell: 4 - 160 ms |
Secs: 0.1-10, Min. 0.1-10, |
Mins: 0.5-10 |
Mins: 0.5-10, 2-60 |
Operate: 0.1 secs - 100 hrs. |
Hrs. 0.1-100 |
Supply Voltage Un/U |
12 - 230 VAC/DC |
- |
- |
12 - 230 VAC/DC |
12 - 230 VAC/DC |
12 - 230 VAC/DC |
24VAC/DC/110VAC |
24VAC/DC/110VAC |
24VAC/DC/230VAC |
24VAC/DC/230VAC |
Output |
DPDT Relay |
SPDT Relay |
SPDT Relay |
SPDT Relay |
SPDT Relay |
DPDT Relay |
Output Rating |
5A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |
5A @ 250VAC |

H.89 W.35 D.59 (mm) |
Type No |
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Description |
Multi Attempt to Start Timer |
Multi Function Timer |
Re-Cycling On/Off Timer |
Dual Function Timer |
Function |
Multi Attempt to Start |
Multi (4) |
Re-Cycling On/Off |
Dual (2) |
- |
Delay On Operate |
- |
Paused Start Recycle |
- |
Interval (Single Shot) |
- |
Delayed Pulse |
- |
Symmetrical Off/On |
- |
- |
- |
Symmetrical On/Off |
- |
- |
Time Range |
Single |
Multi |
Multi |
Multi |
1-30 sec |
0.5Secs-60Mins |
0.24Secs-10Hrs |
0.24Secs-10Hrs |
Supply Voltage Un/U |
24vdc |
12VAC, 12VDC |
24 to 240VAC/DC |
24 to 240VAC/DC |
- |
24VAC/DC/110VAC |
- |
- |
- |
24VAC/DC/230VAC |
- |
- |
Output |
DPDT Relay |
DPDT Relay |
DPDT Relay |
DPDT Relay |
Output Rating |
8A@250vac |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |

H.80 W.40 D.92(mm) |
Type No |
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B8ARC |
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Description |
Re-Cycling Timer |
True Delay Off Timer |
True Delay Off Timer |
Multi Function Timer |
Anti-recycling |
Function |
Re-Cycling |
True Delay Off |
True Delay Off |
Multi (4) |
Adjustable Restart delay |
(Asymmetrical) |
(Delay on Release) |
(Delay on Release) |
Delay On |
Prevents load from being |
- |
- |
- |
Interval (Single Shot) |
restarted too soon after being |
- |
- |
- |
Symmetrical Off/On |
de-energized |
- |
- |
- |
Symmetrical On/Off |
Compressor Protection |
Time Range |
Multi |
Multi |
Single |
Multi |
Single |
Secs: 0.5-15, 2-60, 15-480 |
Secs: 0.5-15, 260, 15-480 |
Secs: 0.2-5, 0.5-10, 1-30, 2-60 |
0.5Secs to 60Mins |
- |
Mins: 2-60 |
Mins: 2-60 |
Mins: 0.2-5, 0.5-10 |
- |
Mins: 6-30 |
Selected by Dip Switch |
Selected By Dip Switch |
- |
- |
- |
Supply Voltage Un/U |
12 to 240VAC/DC |
24 to 240VAC/DC |
- |
12VAC, 12VDC |
- |
- |
- |
24VDC, 48VAC/DC |
24VAC/DC/110VAC |
- |
- |
- |
24, 110, 220/240VAC |
24VAC/DC/230VAC |
110, 220/240VAC |
Output |
DPDT Relay |
DPDT Relay |
DPDT Relay |
DPDT Relay |
SPDT Relay |
Output Rating |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |
8A @ 250VAC |

H.90 W.36 D.58(mm) |
Type No |
DTR20 |
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Description |
7 Day |
Function |
32 programs |
via Geographical Location |
Vacation Mode |
Time Range |
24 hours / 7 Days |
Automatic Daylite Savings |
Auto Sunrise / Sunset |
Supply Voltage Un/U |
85 - 265 VAC |
Replaceable Backup Battery |
Output |
2 x SPDT |
Output Rating |
16A @ 250VAC |
Communication |
RS485 |
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