ANMA System Building

Identity

category	smart_meters
manufacturer	OpenEnergyMonitor
model	emonTx4
product_family	AVR-DB hardware family (emonTx4, emonPi2, emonTx5)
product_status	active
region	GLOBAL

Electrical

accuracy_class	Class 1 (IEC 62053-21) / Class B (EN 50470-3)
accuracy_combined_tolerance_pct	±1.2% % emonTx4 — docs/overview.md — line 48
adc_resolution_bits	12 bit emonTx4 — docs/overview.md — line 34
analog_input_range_v	0 - 1.024V V emonTx4 — docs/other_sensors.md — line 71
bidirectional	True
bidirectional_metering	True
cpu	AVR128DB48 emonTx4 — docs/overview.md — line 32
ct_input_count	6 emonTx4 — docs/overview.md — line 17
current_only_mode	True emonTx4 — docs/firmware.md — line 60
datalogging_period_s	9.8 s emonTx4 — docs/configuration.md — line 24
default_radio_group	210 emonTx4 — docs/configuration.md — line 22
default_radio_node_id	17 emonTx4 — docs/configuration.md — line 21
energy_persisted_on_reboot	True emonTx4 — docs/overview.md — line 20
extension_options	ESP8266, ESP32, Pi Pico & Pi Zero emonTx4 — docs/overview.md — line 27
firmware_options	8 emonTx4 — docs/firmware.md — line 9
indoor_outdoor	Indoor use only emonTx4 — docs/emontx4_emonbase_install.md — line 44
length_mm	65 mm emonTx4 — readme.md — line 23
line_frequency_hz	50 or 60 Hz emonTx4 — docs/configuration.md — line 80
max_ct_channels_with_expander	12 emonTx4 — docs/firmware.md — line 15
max_current_a	65.0
mcu_flash	128 kb flash emonTx4 — readme.md — line 11
measurement_type	Current Transformer (CT)
minimum_pulse_period_ms	100 ms emonTx4 — docs/configuration.md — line 25
node_id_selection	DIP Switch to select node id emonTx4 — readme.md — line 19
phase_count	1
power_supply	USB-C power emonTx4 — readme.md — line 20
radio_encryption	Encryption is enabled by default emonTx4 — docs/technical.md — line 55
radio_formats	LowPowerLabs (Default & Recommended) emonTx4 — docs/technical.md — line 13
radio_frequency_mhz	433 MHz emonTx4 — docs/configuration.md — line 23
radio_module	RFM69CW emonTx4 — docs/overview.md — line 37
sampling	continuous sampling emonTx4 — docs/overview.md — line 19
supported_ct_types	333mV voltage output CT sensors emonTx4 — docs/overview.md — line 17
terminal_block_inputs	3 emonTx4 — docs/overview.md — line 23
three_phase_system_type	3-phase, 4-wire systems only emonTx4 — docs/firmware.md — line 56
three_phase_voltage_sensing	True emonTx4 — docs/overview.md — line 22
usb_uart_converter	CP2102 emonTx4 — docs/overview.md — line 36
voltage_input	emonVs precision voltage sensor input emonTx4 — docs/overview.md — line 18
voltage_input_connector	RJ11 emonTx4 — docs/emontx4_emonbase_install.md — line 92
voltage_rating_v	230.0

Physical / mechanical

enclosure_material

aluminium

emonTx4 — docs/overview.md — line 28

Installation

mounting

Wall-mount

emonTx4 — docs/overview.md — line 28

Environment

max_temperature_sensors	6 emonTx4 — docs/other_sensors.md — line 35
operating_temperature_max_c	60.0
operating_temperature_min_c	-25.0
rj45_pulse_temperature_port	RJ45 socket for pulse counting and DS18B20 temperature sensors emonTx4 — docs/overview.md — line 24

Interfaces & connectors

communication	RS485 Modbus RTU
device_type	6-channel CT energy monitoring transmitter node (433 MHz radio)

Documents

technical-manual emonTx4 documentation (read the docs)

technical-manual emonTx4 overview / technical spec

technical-manual emonTx4 — docs/configuration.md

technical-manual emonTx4 — docs/emontx4_emonbase_install.md

technical-manual emonTx4 — docs/firmware.md

technical-manual emonTx4 — docs/other_sensors.md

technical-manual emonTx4 — docs/overview.md

technical-manual emonTx4 — docs/technical.md

technical-manual emonTx4 — readme.md