Wireless Digital Signal Sensor
Wirelessly capture pulse outputs from utility meters and contact closure signals from alarms and status indicators. Turn any pulse-output meter into a wireless IoT data source in minutes.
High-Speed Pulse Counting for Utility Meters
The ZPC captures pulse outputs from electricity meters, gas meters, water meters, and heat meters, converting them to cumulative and rate-based readings transmitted wirelessly to the EpiSensor gateway. With support for high-frequency pulse inputs, the ZPC accurately counts even at rates exceeding 50 pulses per second, ensuring no pulses are missed during periods of high consumption. Configurable pulse weight settings map raw counts to engineering units such as kWh, cubic metres, or litres.
Digital Input Monitoring
The ZDI variant monitors dry contact closure inputs, reporting open/closed state changes in real time. This makes it ideal for monitoring alarm contacts, equipment run status, door positions, and any other binary signal source. State changes are transmitted immediately to the gateway, enabling rapid response to alarm conditions. The ZDI can also be configured to count transitions for run-time metering and duty-cycle analysis of rotating equipment.
Two Independent Input Channels
Each ZPC/ZDI unit provides two independent digital input channels, allowing you to monitor two meters or two alarm points from a single device. This reduces hardware costs and panel space requirements in installations where multiple meters are located in the same distribution board or plant room. Each channel is independently configurable with its own pulse weight, debounce settings, and reporting parameters.
ZigBee Mesh with Local Data Buffering
The ZPC and ZDI communicate via the EpiSensor ZigBee mesh network, with each mains-powered unit routing data for other nearby devices. During any network interruption, pulse counts continue to accumulate locally and are backfilled to the gateway when connectivity is restored. This ensures that meter readings remain accurate even during temporary wireless outages, a critical requirement for billing and energy management applications.
Specifications
| Models | ZPC-2X (pulse counter), ZDI-2X (digital input) |
| Digital Inputs | 2 x independent channels |
| Input Type | Volt-free (dry contact) or open collector |
| Maximum Pulse Rate | 50 Hz per channel |
| Debounce | Configurable, 10ms to 1000ms |
| Wireless | ZigBee (IEEE 802.15.4), 2.4 GHz |
| Mounting | DIN-rail (35mm) |
| Power Supply | 85-265V AC (internal PSU) |
| Operating Temperature | -20°C to +55°C |
| Certifications | CE |
Use Cases
Utility Meter Monitoring
Connect to pulse outputs on electricity, gas, water, and heat meters for wireless consumption tracking and sub-metering.
Equipment Run Status
Monitor equipment on/off status, run hours, and duty cycles via contact closure inputs for predictive maintenance.
Alarm Monitoring
Capture alarm contact outputs from BMS panels, fire systems, and equipment fault relays for centralised alerting.
Related Products
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ZEMFor direct electrical measurement with Class 1 accuracy rather than pulse counting.
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ZHMFor meters with wired M-Bus communication instead of pulse outputs.
Learn MoreZGW-10 Gateway
ZGWThe central hub that collects and forwards all pulse count and digital input data.
Learn MoreReady to Monitor Your Meters Wirelessly?
Talk to our team to learn how the ZPC and ZDI can bring your existing meters online.