Transmitter Solutions RECTS433SEQ Sequencing Receiver Delay and Relay Details
The Transmitter Solutions RECTS433SEQ is a HIVE 433 MHz stand-alone two-relay sequencing receiver designed for vestibule doors and compatible automation applications. The receiver can activate two relay outputs in a programmed sequence, allowing one supported transmitter command to operate an immediate relay and a second delayed relay.
Transmitter Solutions documents this model as the Sequencing Vestibule Receiver. The official receiver manual identifies the underlying receiver hardware as SEL2641R433-SQR and documents 433.92 MHz KeeLoq hopping-code operation, two relays, adjustable delay timing, pulse and toggle functions, and memory for up to 85 transmitter keys.
What the RECTS433SEQ Receiver Does
RECTS433SEQ receives a compatible 433 MHz rolling-code transmitter command and activates the red relay RR, green relay RV, or both relays according to how the transmitter key was memorized.
The two-relay sequence is useful for applications such as sequencing automatic vestibule doors where one control output operates first and another control output must activate after an adjustable delay.
This is a stand-alone relay receiver. It should not be confused with a HIVE Wiegand receiver, multi-frequency RF module receiver, or 433 MHz radio repeater.
Three Documented Operating Modes
The official Transmitter Solutions manual documents three receiver operating modes:
- Green relay RV in pulse or toggle mode.
- Red relay RR in pulse mode with delayed activation.
- Sequencing mode with both RR and RV activated and RR delayed for a vestibule application.
The transmitter key is memorized to RR, RV, or RR and RV depending on the required relay function.
Red Relay RR Delayed Pulse Operation
When a compatible transmitter key is memorized on the red relay RR, the red relay activates for a 0.5-second pulse after the programmed delay.
- RR pulse time - 0.5 second
- Adjustable delay - up to 30 seconds
- Factory default delay - 10 seconds
The manual describes the operating sequence as adjustable from 0 to 30 seconds, while the technical specification table lists a delay time of 1 to 30 seconds. The receiver programming instructions allow the timing sequence to be built using 1-second and 5-second increments. Verify the required timing during installation.
Green Relay RV Pulse or Toggle Operation
The green relay RV can operate in pulse mode or toggle mode.
- 0.5-second pulse - factory default
- 10-second pulse hold time
- Toggle or latching-style operation
In toggle mode, successive valid commands change the RV relay operating state. The manual documents a programming procedure for changing RV between pulse and toggle modes.
Sequencing Mode for Two Relay Outputs
When a transmitter key is memorized to both RR and RV, the receiver operates both relays in sequence.
The green relay RV activates with a 0.5-second pulse when the valid transmitter command is received. The red relay RR then activates with a 0.5-second pulse after the programmed delay.
The RR delay can be adjusted up to 30 seconds, with a factory default of 10 seconds. This is the primary sequencing function documented for vestibule door applications.
Adjustable Delay Programming
The official manual documents delay adjustment using the receiver PR and PV programming buttons:
- PR adds 1 second for each programming press.
- PV adds 5 seconds for each programming press.
- Maximum programmed delay is 30 seconds.
During the delay period, the red LR indicator LED flashes once per second. The manual states that the number of flashes can be used to identify the programmed delay.
85 Transmitter Key Memory
RECTS433SEQ is documented with memory for up to 85 transmitter keys or codes.
The 85-key specification should not automatically be described as 85 complete multi-button remotes. The manual programs a transmitter key to RR, RV, or RR and RV. Confirm the number of transmitter buttons or key functions that must be stored when planning a larger installation.
The receiver also provides procedures for deleting a transmitter key from RV, deleting a transmitter key from RR, deleting a key memorized to both relays, and erasing the complete receiver memory.
433.92 MHz KeeLoq Hopping-Code Technology
The official receiver manual documents the following radio specifications:
- 433.92 MHz operating frequency
- Superheterodyne receiver architecture
- AM/ASK demodulation
- -115 dBm sensitivity for a good signal
- KeeLoq hopping-code security protocol
Matching 433 MHz frequency alone does not prove transmitter compatibility. The remote must use the compatible rolling-code system accepted by the receiver.
The Transmitter Solutions cut sheet states that the receiver is compatible with a variety of wall-mounted and handheld transmitters, but it does not provide a complete current transmitter SKU compatibility list. Verify the existing transmitter model before ordering additional remotes.
Two Relay Contact Configuration
The manufacturer specifications identify two relays:
- One Normally Open relay
- One relay with Normally Open or Normally Closed contact availability
The receiver manual identifies the relays as RR and RV. Verify the physical C, NO, and NC terminal markings before moving wiring from another receiver.
The documented maximum commutable relay power is 24W or 24VA. Do not use the receiver relay to switch an unknown mains-voltage or high-current load directly. Verify the electric strike, magnetic lock, automatic door controller, gate operator input, or other connected equipment before wiring.
12 or 24 VAC/DC Power
RECTS433SEQ operates from 12 or 24 VAC/DC power. The receiver board provides separate documented supply positions for 12V and 24V operation with a common 0V connection.
Verify the available low-voltage power and the printed receiver terminal markings before installation. Do not connect mains voltage directly to the receiver.
Automatic Door and Vestibule Applications
The official manufacturer manual describes the receiver for wireless activation of sequencing automatic doors. The Transmitter Solutions cut sheet also identifies applications involving electric door strikes, magnetic locks, and other automation needs.
The receiver provides timed relay commands only. Complete door sequencing, lock power, egress, fire alarm interface, automatic door safety, and access control requirements still depend on the connected equipment and the installation.
For electric locks, magnetic locks, automatic door operators, or controlled egress applications with unclear wiring or life-safety requirements, use a qualified automatic door, access control, low-voltage, or electrical technician.
Similar HIVE Products Are Not Automatically Interchangeable
- RECTS433SEQ is a two-relay sequencing receiver with an adjustable delayed relay function.
- RECTSPOWC4P is a separate 433 MHz four-relay receiver and does not use the same documented vestibule sequencing architecture.
- REPTX is a 433 MHz single-frequency repeater and is not a stand-alone sequencing relay receiver.
- RECTSWIE433 and related HIVE Wiegand receivers provide credential data output rather than the RECTS433SEQ two-relay sequence.
- A generic 433 MHz receiver should not be substituted when the application requires the RR and RV timing sequence.
Features and Specifications
| Feature | Specification |
| Brand | Transmitter Solutions |
| Part Number | RECTS433SEQ |
| Product Family | HIVE |
| Manufacturer Product Type | Sequencing Vestibule Receiver |
| Manual Hardware Reference | SEL2641R433-SQR |
| Receiver Type | Superheterodyne |
| Demodulation | AM/ASK |
| Operating Frequency | 433.92 MHz |
| Security Protocol | KeeLoq hopping code |
| Sensitivity | -115 dBm |
| Input Impedance | 50 Ohm in receiver manual; cut sheet lists 80 Ohm - verify hardware revision when critical |
| Supply Voltage | 12 or 24 VAC/DC |
| Current Consumption at Rest | 25 mA |
| Current With 1 Relay Excited | 55 mA |
| Relay Count | 2 |
| Relay Contact Configuration | 1 NO; 1 NO or NC |
| Maximum Commutable Power | 24W or 24VA |
| Memory Capacity | Up to 85 transmitter keys |
| RR Pulse Time | 0.5 second |
| RV Pulse Time | 0.5 or 10 seconds |
| RV Operating Modes | Pulse or toggle |
| Delay Range | Operating sequence documented up to 30 seconds; technical table lists 1-30 seconds |
| Factory Default Delay | 10 seconds |
| Operating Temperature | -4F to 158F |
| Dimensions | 4.1 x 1.8 x 1.1 in |
| Weight | 2.3 ounces |
Package Contents Require Confirmation
The current Transmitter Solutions product page, cut sheet, and receiver manual reviewed for RECTS433SEQ do not provide a complete retail package inventory.
Do not assume transmitters, a power transformer, remote antenna kit, electric strike, magnetic lock, automatic door operator, or other control equipment are included. Confirm the exact package contents when replacing missing accessories or building a new sequencing system.
Technician Note
The biggest ordering mistake with RECTS433SEQ is replacing it with a regular two-channel 433 MHz receiver. This receiver has a specific RR and RV timing sequence. RR is the delayed 0.5-second relay, while RV can use a 0.5-second pulse, 10-second pulse, or toggle mode. Match the required door or automation sequence first, then verify the transmitter protocol and relay contacts.
Before Ordering Checklist
- Verify the receiver part number is RECTS433SEQ.
- Confirm a two-relay sequencing receiver is required.
- Verify the application requires 433.92 MHz KeeLoq hopping-code operation.
- Identify the exact existing transmitter model.
- Confirm whether the transmitter key must operate RR, RV, or RR and RV.
- Verify the required RR delay time.
- Confirm whether RV requires a 0.5-second pulse, 10-second pulse, or toggle operation.
- Check whether the connected equipment requires NO or NC relay contacts.
- Verify the relay load does not exceed the documented 24W or 24VA maximum.
- Confirm 12 or 24 VAC/DC power is available.
- Inspect the existing antenna and receiver location.
- Confirm the exact package contents before ordering accessories.
Installation and Service Notes
Document the existing RR and RV relay functions before replacing an installed sequencing receiver. A regular two-channel receiver may activate two outputs but still fail to reproduce the required delayed vestibule sequence.
Verify relay contact requirements and controlled load before wiring. For electric strikes, magnetic locks, automatic door operators, or other powered hardware, confirm the manufacturer's control input and power requirements. Do not switch an unknown high-current or mains-voltage load directly through the receiver.
For automatic door safety, controlled egress, fire access, unknown lock wiring, or unclear low-voltage power circuits, use a qualified automatic door, access control, or electrical technician. Do not bypass required safety, egress, fire access, or entrapment protection circuits.
Product Questions and Answers
What is the Transmitter Solutions RECTS433SEQ designed to control?
RECTS433SEQ is a two-relay sequencing receiver documented for wireless activation of sequencing automatic doors and vestibule applications. It may also be used with compatible automation equipment when the required relay timing and electrical limits match the receiver.
How do the RR and RV relays operate in sequencing mode?
When a transmitter key is memorized to RR and RV, the green RV relay activates with a 0.5-second pulse when the valid command is received. The red RR relay then activates with a 0.5-second pulse after the programmed delay.
What delay range can be programmed on RECTS433SEQ?
The receiver operating instructions describe an RR delay adjustable up to 30 seconds, with a 10-second factory default. The technical table lists 1-30 seconds, while the operating sequence is shown as 0-30 seconds. Verify the required timing during programming.
Can the green RV relay operate in latching mode?
Yes. The manufacturer manual documents RV pulse or toggle operation. In pulse mode, RV can use a 0.5-second or 10-second hold time. Toggle mode changes the relay state with successive valid commands.
How many remotes can the RECTS433SEQ receiver store?
The receiver is documented for up to 85 transmitter keys or codes. Because a transmitter key is memorized to RR, RV, or RR and RV, do not automatically describe this as 85 complete multi-button remotes.
Will RECTS433SEQ work with any 433 MHz transmitter?
No. Matching 433 MHz frequency alone does not prove compatibility. RECTS433SEQ uses KeeLoq hopping-code technology, and the transmitter must use the compatible radio protocol accepted by the receiver. Verify the existing transmitter model before ordering.
Can the RECTS433SEQ relay directly switch an electric lock or other powered load?
The receiver relays are documented for a maximum commutable power of 24W or 24VA. Verify the connected equipment and relay load before wiring. Do not switch unknown mains voltage or a high-current load directly through the receiver.
What should I verify before ordering Transmitter Solutions RECTS433SEQ?
Verify the RECTS433SEQ part number, 433.92 MHz KeeLoq transmitter system, required RR and RV sequence, delay time, RV pulse or toggle mode, NO or NC contact requirements, 85-key memory capacity, 12 or 24 VAC/DC power, relay load, antenna arrangement, and package contents.
