• Eagle Signal Controls

B866 Series, Analog Multi-Function Digital Timers

Simple dial set timer…Multiple time ranges and versatile functions in a compact 1/16 DIN package
Eagle Signal Controls B866 programmable, multi-function timer series


  • Field selectable for operation in On-Delay, Off-Delay*, Interval, or Repeat Cycle modes
  • Universal power supply accepts 24 – 240 VAC or 24 VDC
  • Meets IEC 801 level 4 noise immunity standards
  • Unique On-Delay/Interval model lets one unit do the work of two in many applications
  • Industry standard socket connection
  • Front panel or DIN rail mounting
  • Flexible start and reset input signals
  • UL, CUL recognized, CE compliant
  • IP54 rated front panel – ideal for harsh environments


The Eagle Signal B866 timer series provide versatility and simplicity of operation. ideal for productions applications that require reliability and low cost timing solution. Housed in a compact 1/16 DIN package, changing the set time is as simple as turning a dial. Selectable time ranges provide preset times ranging from 0.06 seconds to 10 hours. The B866 is also field configurable to operate in On-Delay, Off-Delay, Interval, or Repeat Cycle timing modes.
A unique On-Delay/Interval model lets the B866 perform two timing functions in one compact unit. In addition to working as an On-Delay timer, an independent output interval time is provided. The output interval can be set to one of eight time values through DIP switches located on the side of the unit

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An industry standard 11 pin socket connection simplifies wiring and makes replacing existing units quick and easy. The unit can be DIN rail mounted, or with optional hardware, panel mounted. Multiple time ranges allow settings from 0.06 seconds to 10 hours

Harsh industrial environments are no problem for the B866… its IP54 front panel and IEC 801 level 4 noise immunity rating give this unit the strength to survive in the toughest conditions. A universal power supply meets global requirements for 24 – 240 VAC or 24 VDC operation.

  • Literature
  • Specifications

Literature and Technical Information

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Analog Multi-Function Counters – Timers

B866 Programmable Counters

++ B866 Series-Analog Counters| Brochure (465 kB)
B866 Standard Features
Display: Analog dial set
Front Panel Rating: IEC IP65
Repeat Accuracy: + 0.03%
Operating Modes: On-Delay, Off-Delay, Interval, Repeat Cycle, On-Delay Interval
Time Ranges: Field Selectable 1, 10 Seconds; 1, 10 Minutes; 1, 10 Hours
Setting Accuracy: + 5%
Repeat Accuracy: + 0.5%
Electrical Service Life: 100,000 cycles at full load
Mechanical Service Life: 10 million cycles at min. load
Start: NPN or Dry Contact
Reset: NPN or Dry Contact
Timed (B866-500/100): DPDT – 5 amp
Timed (B866-511): SPDT – 5 amp
Instantaneous (B866-511): SPDT – 5 amp
Activation Time: 15 msec. max.
Operating Temp.: 0° to 55° C (32° to 131° F)
Storage Temperature: -40° to 90° C (-40° to 194° F)
Storage Temp.: -40 °C to 90 °C (-40 °F to 194 °F)
Supply Voltage: 35% to 85% RH non-condensing
Humidity: 5% to 95% RH non-condensing
Power Consumption: < 10 VA
Wiring Connection: Via 11 pin (B866-500/100) or 8 pin (B866-511) plug-in socket
Approvals: B866-100, -500: UL, CUL recognized, CE compliant
B866-511: UL, CUL recognized
Weight: 100 grams (3.5 ounces)
Dimensions: 48mm x 48mm, 81mm deep
Cutout | Mounting: Panel Mounting in 45 x 45 cutout (requires optional mounting bracket), or DIN rail