hard EnOcean exam questions
EnOcean Knowledge mock exam questions selected at hard level. Ideal for preparing for the discriminating questions you'll see on exam day.
Hard level questions
Q01
The most common EnOcean RORG values are RPS (F6, Repeated Switch Telegram, push-buttons), 1BS (D5, 1-Byte Sensor, magnetic contacts), 4BS (A5, 4-Byte Sensor, temperature / CO2 / lux sensors) and VLD (D2, Variable Length Data, modern multi-function devices).TrueFalse2. EEP· Häufige RORG· HardCorrect answerTrueLearning tipEnOcean defines a small set of telegram families to match the energy budget and payload size of each device class. RPS (F6) carries 8 bits of user data and is used by piezo rockers. 1BS (D5) carries a single byte and is typical of magnetic contact sensors. 4BS (A5) carries four bytes and is used for analogue sensors that report temperature, humidity, CO2 or illuminance. VLD (D2) supports a variable-length payload for richer, modern devices such as metering or HVAC actuators. Secure variants (RORG 30 / 35) wrap any of the above with EnOcean Secure encryption.
Q02
Smart Acknowledge (Smart Ack) is the EnOcean protocol for bidirectional communication with battery-less devices: the sensor registers with a Postmaster (a relay) that buffers commands destined for the sensor and delivers them during the brief listening window that follows each of the sensor's own transmissions.TrueFalse5. Smart Ack· Bidirektionale Kommunikation· HardCorrect answerTrueLearning tipSmart Ack solves the fundamental asymmetry of an energy-harvested sensor: it can transmit cheaply but cannot afford to keep a receiver running continuously. A mains-powered Postmaster acts as a persistent relay; the sensor registers its short listening windows (typically a few milliseconds after each outgoing telegram), and the Postmaster queues any inbound commands (configuration, ACK, OTA updates) in a mailbox. As soon as the sensor next transmits, the Postmaster fires the queued command inside the listening window. This is what makes over-the-air configuration of battery-less devices possible at all.
Q03
EnOcean has recently expanded into hybrid EnOcean + BLE (Bluetooth Low Energy) devices that emit the same event on both radios, allowing direct integration with smartphone apps AND with traditional EnOcean gateways.TrueFalse12. Modern EnOcean· Hybrid mit Bluetooth Low Energy· HardCorrect answerTrueLearning tipHybrid EnOcean plus BLE devices broadcast each event twice, once on the sub-GHz EnOcean band and once as a BLE advertisement, both from the same harvested energy budget. EnOcean provides the long-range path (50 to 100 m indoors via existing gateways), while BLE provides a short-range path (around 10 m) that a smartphone can pick up natively without any dedicated EnOcean app. A common use case is a guest in a home using their phone as a remote control over BLE while the same button still drives the building's regular automation over EnOcean. Devices on the market include the NodOn Smart Button and the EnOcean Easyfit range; this is a clear post-2023 industry trend.
Q04
To expose EnOcean devices in the Matter ecosystem (Apple HomeKit, Google Home, Amazon Alexa, Samsung), a Matter Bridge represents each EnOcean device as a virtual Matter endpoint with the appropriate cluster (OnOff, Level Control, Sensor).TrueFalse13. Matter· Matter Bridge· HardCorrect answerTrueLearning tipAn EnOcean to Matter Bridge listens to or polls the EnOcean radio, and for every taught device it instantiates a virtual Matter endpoint. The EEP is mapped onto Matter clusters: F6-02-01 (rocker push-button) becomes an OnOff cluster, A5-02-05 (temperature sensor) becomes a TemperatureMeasurement cluster, and D5-00-01 (contact) becomes a BooleanState cluster. End users can then configure their EnOcean devices through the Home app on iOS or Google Home as if they were native Matter products. NodOn has announced a Matter bridge (timeline to be verified: initial target was 2025-2026).