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Aiphone RY-PA Door Release Relay, 12V DC, N/O for LEF Series
The Aiphone RY-PA Door Release Relay is a 12V DC, normally open (N/O) contact relay engineered specifically for door release activation on Aiphone LEF Series systems. Compact at just 2-3/16" W x 1-3/8" H x 7/8" D, this relay is rated for 24V DC, 1A or 240V AC, 300mA contact loads, making it a reliable component for commercial electronic access control installations. Designed as a dedicated accessory for LEF Series intercom and entry systems, the RY-PA delivers dependable switching performance in a space-saving footprint suitable for control panel or enclosure mounting.
Key Features
- Compact Dimensions: Measures 2-3/16" W x 1-3/8" H x 7/8" D, allowing for flexible placement within control enclosures and panels.
- 12V DC Operation: Designed to operate on 12V DC power for straightforward integration with compatible LEF Series door release circuits.
- Normally Open (N/O) Contact Output: Provides N/O switching for door release activation, simplifying wiring to strikes and other release hardware.
- Dual Contact Rating: Rated for 24V DC, 1A or 240V AC, 300mA, offering flexibility across different power configurations for connected release devices.
- LEF Series Compatibility: Purpose-built for use with Aiphone LEF Series systems, ensuring proper functional integration with door release activation sequences.
- Commercial-Grade Reliability: Suited for electronic access control applications requiring consistent, dependable relay switching performance.
Technical Specifications
- Product Type: Relays
- Product Group: Electronic Access Controls
- Product Subgroup: Parts and Accessories
- Subcategory: Accessories
- Commercial/Residential: Commercial
- Electronic: Yes
- Product Category: Electronic Access Controls
- Department: Door Hardware
Typical Applications
- Commercial Office Buildings
- Educational Facilities
- Healthcare Institutions
- Retail Establishments
- Multi-Tenant Residential Properties
- Emergency Exit Compliance Systems
- Government and Municipal Buildings
Why Aiphone RY-PA?
Aiphone RY-PA relays are engineered as purpose-built accessories for the LEF Series, ensuring precise compatibility with door release activation requirements. With a defined contact rating of 24V DC, 1A or 240V AC, 300mA and a compact footprint, this relay delivers dependable, professional-grade performance for commercial electronic access control systems where accurate door release switching is essential.
Manufacturer Resources
General Line Catalog (Full Catalog)
Product Specs
- Product Type:
- Relays
- Series:
- LEF Series
- Product Group:
- Electronic Access Controls
- Product Subgroup:
- Parts and Accessories
- Subcategory:
- Accessories
- Commercial/Residential:
- Commercial
- Electronic:
- Yes
- Product Category:
- Electronic Access Controls
- Department:
- Door Hardware
Aiphone RY-PA – Frequently Asked Questions
1) Will the Aiphone RY-PA relay work with my electric strike, or do I need a bigger relay?
Check the current draw of your strike against the contact rating. The RY-PA switches 24V DC at 1A, or 240V AC at 300mA. Most low-current electric strikes and maglock release circuits fall inside that, but a strike pulling more than 1 amp at 24V DC needs a heavier relay or a contactor between the RY-PA and the lock. The contact is normally open, so it closes only when the relay is energized.
2) Can I use the RY-PA relay with an Aiphone GT or AX system, or is it LEF only?
It's built for the LEF Series. The RY-PA is a dedicated door release accessory for Aiphone LEF Series intercom and entry systems, and its release activation is matched to that platform. For other Aiphone families, use the release accessory specified for that series rather than assuming the RY-PA drops in.
3) Is the Aiphone RY-PA normally open or normally closed, and does that matter for a fail safe lock?
Normally open only. The contact is open at rest and closes when the relay is energized, which fits fail secure electric strikes that unlock when power is applied. A fail safe device that must drop power to release needs a normally closed contact instead, so the RY-PA is not the part for that circuit unless you invert it with a second relay.
4) Is the Securitron RB-4 relay board a direct replacement for an Aiphone RY-PA on an LEF intercom?
No. The Aiphone RY-PA is a door release relay built specifically for the Aiphone LEF Series, operating on 12V DC with a normally open contact rated 24V DC 1A or 240V AC 300mA, so it drops into LEF door release circuits as the manufacturer intends. The Securitron RB-4 is a general purpose relay board from the RB-4 Series, not an LEF accessory, so it is selected and wired to the installer's own circuit design rather than to an Aiphone release sequence. If you are servicing an existing LEF system and want the factory part, the RY-PA is the match.
5) I need the door to stay unlocked for a set number of seconds after release - will the Aiphone RY-PA do that?
The Aiphone RY-PA is a straight normally open switching relay for door release activation on LEF Series systems; it makes and breaks the release contact and does not itself provide timed unlock intervals. Where the job calls for an adjustable time delay on the release, the Securitron TM-2 Time Master II is a multi-function timer intended for that role, and it can be used alongside relay switching rather than instead of it.
6) What voltage does the Aiphone RY-PA coil need?
12V DC drives the coil. That's the operating supply side, and it is separate from what the contacts switch, which can be up to 24V DC at 1A or 240V AC at 300mA. If your panel only has a 24V supply available, you'll need a 12V DC source for the relay itself.
7) What are the alternatives to the Aiphone RY-PA if I need timing or multiple relay outputs?
The RY-PA is a single purpose door release relay for LEF systems, not a logic or timing device. If you need a timed release, the Securitron TM-2 Time Master II is a multi-function timer. For multiple switched outputs off one input, look at the Securitron RB-4 relay board. For relay logic in an access control circuit, the Securitron RLP Relay Logic Pack covers that role. Those are brand-agnostic devices rather than Aiphone LEF accessories, so wire them to the LEF release output rather than expecting drop-in integration.
8) Can the RY-PA switch a 120V AC circuit for a door operator or gate?
Yes on voltage, but watch the current. The AC side of the contact is rated to 240V AC at 300mA, so 120V AC is within range only if the load stays at or under 300 milliamps. That's enough for a pilot or control input on a door operator, not enough to run a motor directly. Motor loads need a contactor triggered by the RY-PA.
9) What should I use if I need more than simple on/off switching at the door release point?
The Aiphone RY-PA handles one thing well: a single normally open contact for door release on LEF Series systems, in a 2-3/16 inch W x 1-3/8 inch H x 7/8 inch D body that fits inside a control enclosure. When the opening needs combined logic - multiple inputs or sequenced outputs feeding the release - the Securitron RLP Relay Logic Pack is built around that kind of logic function instead of a single dedicated release contact.
10) For a facility standardizing access control hardware across brands, how does the Aiphone RY-PA differ from the Securitron relay products?
The Aiphone RY-PA is a brand-matched accessory - it exists to serve Aiphone LEF Series door release circuits, with a fixed 12V DC coil and a stated contact rating of 24V DC 1A or 240V AC 300mA. The Securitron RB-4 Relay Board and RLP Relay Logic Pack are brand-independent control components that an integrator specifies to suit whatever head end is on the job. Facilities running Aiphone LEF intercoms typically stock the RY-PA for like-for-like service, and use general purpose boards where the release circuit is custom.
11) Is the Aiphone RY-PA suitable for a commercial building, or is it a residential part?
Commercial. Aiphone lists the RY-PA as a commercial electronic access control component, and it's used in offices, schools, healthcare facilities, retail, multi-tenant residential, and government buildings running LEF Series entry systems.
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Does the Aiphone RY-PA come with a warranty?
Absolutely. The Aiphone RY-PA is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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