NewTrend · WiFi metering and protection switch
Product overview
The OB9S-VAP is an 18 mm single-phase 1P+N WiFi switch with energy metering and adjustable electrical alarm/protection settings. Remote ON/OFF control, timing functions and relay-state memory are combined with voltage, current, active-power and energy monitoring.
Smart switching and timing
Control the switch from the phone, set a schedule, use a countdown or repeat an ON/OFF cycle. WiFi networking and app monitoring allow remote operation through Tuya Smart or Smart Life. Only 2.4 GHz wireless networks are supported; 5 GHz is not supported.
Technical selection summary
| Model | OB9S-VAP |
|---|---|
| Terminal arrangement | Single-phase 1P+N, as marked on the unit |
| Rated/setting current | 1–63 A adjustable; 63 A maximum |
| Supply voltage | AC 90–300 V |
| Frequency | 50/60 Hz |
| Monitoring | Voltage, current, active power and energy |
| Over-voltage threshold | Technical table: 220–265 V; promotional callout: 220–260 V |
| Under-voltage threshold | 76–240 V |
| App over-current threshold | 1–63 A |
| App high-power alarm threshold | 1–26 kW setting range; this is an alarm setting, not a rated switching-power claim |
| Protection tripping | Separate ON/OFF tripping controls are shown for app alarm settings |
| Timing | Schedule, countdown and cycle timing; app illustrations also show sunrise/sunset options |
| Restart state | Relay-state setting / last-state memory |
| Width and height | 18 mm wide; 82 mm high, original drawing |
| Installation | DIN-rail mounting, positioning buckle |
Alarm thresholds and tripping
Setting a threshold enables the corresponding alarm. The original illustration shows a separate protection-tripping control that can be switched ON or OFF. Over-current, over-voltage, under-voltage and high-power settings are provided. The table and app callout use slightly different over-voltage limits; follow the values available on the supplied unit/app.
Remote operation and records
The app control page provides remote switching and access to recorded electricity usage. The illustrated readings are examples of app operation.
Energy statistics
The source app example provides daily, monthly and yearly energy statistics. Other monitoring screens show measured current, voltage and power for reviewing connected-load operation.
Timing modes
Schedule events for specific times, use a countdown, or repeat switching with cycle timing. The original timing illustration shows example lighting operations.
Protection and timing settings in the app
The app screenshots show high-power, over-current, over-voltage and under-voltage alarms, with individual threshold and tripping settings. The timing-type screen also includes schedule, sunrise, sunset and circulate choices.
Voice and smart-home control
The original reference presents voice operation and linkage with supported smart-home services. Availability depends on the app, account and linked service configuration.
Smart-home linkage reference
The source identifies Alexa, Google Assistant, IFTTT and Google Nest as example linked services. The device itself uses the 2.4 GHz WiFi connection and app for remote control.
Mounting and terminals
The rear positioning buckle secures the unit to a DIN rail. The wiring terminals and conductor positions are marked on the product. Connect supply and load according to the unit terminal diagram.
Dimensions and original parameters
The original VAP-specific technical drawing and table below confirm 82 mm height, 18 mm width, AC 90–300 V, 50/60 Hz and the adjustable current and voltage protection ranges.
Family feature comparison
The original source also compares OB9S-63 and OB9S-63M. OB9S-63 has remote switching, time control and relay-state selection; OB9S-63M adds voltage/current/power/energy monitoring. OB9S-VAP adds adjustable over-voltage, under-voltage, over-current and over-power functions. This page offers the OB9S-VAP only.
