- Fast Shipping
- Huge Inventory
- Trusted by Contractors
- 24/7 Ordering
The Simplex 2081-9010 is a 3.3K-ohm End-of-Line (EOL) resistor used with compatible Simplex fire alarm systems. Current Johnson Controls price documentation specifically identifies part number 2081-9010 as “EOL RESISTOR/3.3K.”
This corrects the identification in my previous response: 2081-9010 is an EOL resistor, not a firefighter telephone phone jack. The similar-looking 2084-9001 is identified in Johnson Controls documentation as a remote phone jack.
Government and Johnson Controls product schedules consistently identify the 2081-9010 specifically as a 3.3K EOL resistor.
The primary purpose of the 2081-9010 is to provide a known electrical resistance at the end of a supervised fire alarm circuit.
A compatible fire alarm control circuit monitors this resistance to determine the condition of its field wiring. Under normal conditions, the control equipment sees the expected EOL resistance.
If field wiring becomes disconnected or broken, the resistance observed by the control equipment changes substantially, allowing the system to identify an abnormal condition.
The EOL resistor therefore contributes to electrical supervision rather than performing smoke, heat, manual alarm, or notification functions itself.
Nominal Resistance: 3.3 kΩ
Equivalent values:
3.3 kΩ = 3,300 Ω
Multiple Johnson Controls and government procurement documents explicitly identify:
2081-9010 — EOL RESISTOR/3.3K.
This resistance value is important. An EOL resistor with a different value should not be substituted unless the documentation for the specific fire alarm circuit explicitly permits it.
The 2081-9010 is intended for circuits specifically designed to use a 3.3K-ohm end-of-line resistance.
Depending on the Simplex equipment generation and system configuration, EOL resistors may be associated with supervised fire alarm circuits such as initiating, monitoring, notification, control, or other field circuits.
However, 2081-9010 should not automatically be assumed compatible with every Simplex circuit simply because it is a Simplex EOL resistor.
The required EOL resistance must match the documentation for the specific control panel, module, or circuit.
An EOL resistor normally needs to be installed at the electrical end of the supervised field circuit, rather than directly at the control panel.
This arrangement allows the control equipment to supervise not only the resistor but also the field wiring leading to it.
Installing an EOL resistor at an incorrect location can prevent the system from properly supervising portions of the field wiring.
Installation should therefore follow the wiring diagram for the particular Simplex control panel or module.
The Simplex 2081-9010 is a passive electrical component.
It does not independently contain:
Its function is to provide the required electrical resistance for circuit termination and supervision.
Component Type: End-of-Line Resistor
Nominal Resistance: 3.3 kΩ
Nominal Resistance in Ohms: 3,300 Ω
Function: Supervised circuit termination
Separate Power Supply: Not required
Addressable: No
Polarity: A conventional resistor itself is non-polarized
A wattage/tolerance specification specifically tied to the legacy 2081-9010 was not established in the authoritative product schedules located, so it should not be inferred.
For comparison only, Simplex’s later 4100ES service-parts documentation identifies 4081-9002 as a 3.3K-ohm, 1 W, 5% EOL harness. That specification belongs to 4081-9002 and should not automatically be assigned to 2081-9010.
Simplex/Johnson Controls documentation also identifies a related:
2081-9010C — EOL Resistor 3.3K, Plastic.
Independent industrial-parts documentation describes the 2081-9010C as an end-of-line resistor rated for 0.02 A at 24 VDC.
The 2081-9010 and 2081-9010C should therefore be cataloged as distinct part numbers, even though both are associated with 3.3K EOL applications.
Simplex has produced numerous EOL resistor values for different fire alarm circuits.
For example, Johnson Controls documentation identifies:
2081-9008: 22K EOL resistor
2081-9010: 3.3K EOL resistor
2081-9016: 22K EOL resistor, Canada
2081-9010C: 3.3K EOL resistor, plastic
2081-9053: four 6.8K, 1/2W resistors
2081-9060: four 10K, 1/2W resistors.
The resistor value specified for the actual fire alarm circuit should always control product selection.
Typical installation involves:
The exact connection method should follow the documentation for the associated Simplex control panel or interface module.
Inspection should verify:
When troubleshooting, resistance measurements should be interpreted according to the circuit documentation and with appropriate consideration for other connected field devices.
Suitable for compatible:
| Weight | 1 lbs |
|---|---|
| Dimensions | 5 × 5 × 5 in |
| Brand |
Your Payment information is processed securely. We do not store credit card details, nor have access to your credit card information.
Orders ship same day
Thousands of parts in stock
Reliable products & service
Order anytime, anywhere
The Simplex 2081-9010 is a 3.3K-ohm End-of-Line (EOL) resistor used with compatible Simplex fire alarm systems. Current Johnson Controls price documentation specifically identifies part number 2081-9010 as “EOL RESISTOR/3.3K.”
This corrects the identification in my previous response: 2081-9010 is an EOL resistor, not a firefighter telephone phone jack. The similar-looking 2084-9001 is identified in Johnson Controls documentation as a remote phone jack.
Government and Johnson Controls product schedules consistently identify the 2081-9010 specifically as a 3.3K EOL resistor.
The primary purpose of the 2081-9010 is to provide a known electrical resistance at the end of a supervised fire alarm circuit.
A compatible fire alarm control circuit monitors this resistance to determine the condition of its field wiring. Under normal conditions, the control equipment sees the expected EOL resistance.
If field wiring becomes disconnected or broken, the resistance observed by the control equipment changes substantially, allowing the system to identify an abnormal condition.
The EOL resistor therefore contributes to electrical supervision rather than performing smoke, heat, manual alarm, or notification functions itself.
Nominal Resistance: 3.3 kΩ
Equivalent values:
3.3 kΩ = 3,300 Ω
Multiple Johnson Controls and government procurement documents explicitly identify:
2081-9010 — EOL RESISTOR/3.3K.
This resistance value is important. An EOL resistor with a different value should not be substituted unless the documentation for the specific fire alarm circuit explicitly permits it.
The 2081-9010 is intended for circuits specifically designed to use a 3.3K-ohm end-of-line resistance.
Depending on the Simplex equipment generation and system configuration, EOL resistors may be associated with supervised fire alarm circuits such as initiating, monitoring, notification, control, or other field circuits.
However, 2081-9010 should not automatically be assumed compatible with every Simplex circuit simply because it is a Simplex EOL resistor.
The required EOL resistance must match the documentation for the specific control panel, module, or circuit.
An EOL resistor normally needs to be installed at the electrical end of the supervised field circuit, rather than directly at the control panel.
This arrangement allows the control equipment to supervise not only the resistor but also the field wiring leading to it.
Installing an EOL resistor at an incorrect location can prevent the system from properly supervising portions of the field wiring.
Installation should therefore follow the wiring diagram for the particular Simplex control panel or module.
The Simplex 2081-9010 is a passive electrical component.
It does not independently contain:
Its function is to provide the required electrical resistance for circuit termination and supervision.
Component Type: End-of-Line Resistor
Nominal Resistance: 3.3 kΩ
Nominal Resistance in Ohms: 3,300 Ω
Function: Supervised circuit termination
Separate Power Supply: Not required
Addressable: No
Polarity: A conventional resistor itself is non-polarized
A wattage/tolerance specification specifically tied to the legacy 2081-9010 was not established in the authoritative product schedules located, so it should not be inferred.
For comparison only, Simplex’s later 4100ES service-parts documentation identifies 4081-9002 as a 3.3K-ohm, 1 W, 5% EOL harness. That specification belongs to 4081-9002 and should not automatically be assigned to 2081-9010.
Simplex/Johnson Controls documentation also identifies a related:
2081-9010C — EOL Resistor 3.3K, Plastic.
Independent industrial-parts documentation describes the 2081-9010C as an end-of-line resistor rated for 0.02 A at 24 VDC.
The 2081-9010 and 2081-9010C should therefore be cataloged as distinct part numbers, even though both are associated with 3.3K EOL applications.
Simplex has produced numerous EOL resistor values for different fire alarm circuits.
For example, Johnson Controls documentation identifies:
2081-9008: 22K EOL resistor
2081-9010: 3.3K EOL resistor
2081-9016: 22K EOL resistor, Canada
2081-9010C: 3.3K EOL resistor, plastic
2081-9053: four 6.8K, 1/2W resistors
2081-9060: four 10K, 1/2W resistors.
The resistor value specified for the actual fire alarm circuit should always control product selection.
Typical installation involves:
The exact connection method should follow the documentation for the associated Simplex control panel or interface module.
Inspection should verify:
When troubleshooting, resistance measurements should be interpreted according to the circuit documentation and with appropriate consideration for other connected field devices.
Suitable for compatible:
| Weight | 1 lbs |
|---|---|
| Dimensions | 5 × 5 × 5 in |
| Brand |
There are no reviews yet.
Your Payment information is processed securely. We do not store credit card details, nor have access to your credit card information.
Select at least 2 products
to compare
Reviews
There are no reviews yet.