HW group · Monitor · brought to Israel by Antech
Over 70 sensors and detectors for temperature, humidity, water leaks, energy, air quality, smoke, gas and vibration. Every one of them plugs into an HW group device, which reads it and raises the alert.
Six families · 40 sensors
Each tile jumps to its family in the guided list below.
Digital 1-Wire, 1-Wire UNI, Pt100 and RS-485 probes for racks, rooms, fridges, freezers and outdoor spots.
Spot detectors and sensing cable units that catch the first drops of water under floors, around pipes and cooling units.
Clamp-on and shunt current probes, mains voltage sensors and DIN rail electricity meters with M-Bus or Modbus.
Third-party detectors with relay or contact outputs: smoke, combustible gas, PIR motion and vibration.
Indoor sensors that add CO2 or VOC readings to temperature and humidity, for offices, schools and public rooms.
Modules that bring dry contacts, relays, 0-20 mA, 4-20 mA and 0-60 V signals onto the 1-Wire UNI bus.
The range · 40 products
Scroll through the range. Your guide introduces every family and explains each product as it comes into view.
01 · Temperature and humidity
Digital 1-Wire, 1-Wire UNI, Pt100 and RS-485 probes for racks, rooms, fridges, freezers and outdoor spots.
Let me show you the temperature and humidity probes. Most of them plug into an RJ11 port and take their 5 V from it, so there is no extra power supply to think about.
1-Wire temperature sensor for 19 inch racks, two RJ11 ports for daisy-chaining
I sit in a 19 inch rack and measure -10 to +80 °C. My two RJ11 ports let you chain the next sensor from me.
Stainless steel 1-Wire temperature probe with IP67 protection, in 1 m, 3 m or 10 m lengths
I am the general purpose probe: stainless steel, IP67, immersible to 1 m. You pick a 1 m, 3 m or 10 m cable.
Stainless steel temperature probe with a flat cable that routes under a fridge door seal
My flat cable slips under a refrigerator or freezer door seal. The stainless steel probe measures -30 to +60 °C.
Outdoor 1-Wire temperature probe, stainless steel IP67 casing, -50 to +125 °C
I go outside. My stainless steel casing is IP67 and I read from -50 to +125 °C, so frost and heat are both fine.
Humidity-only 1-Wire probe for IT racks, 0 to 100 % RH, 1 m or 3 m cable
I only measure relative humidity, 0 to 100 % RH. Clip me to a cable bundle in a rack and I report over 1-Wire.
Combined 1-Wire temperature and humidity rod sensor for indoor and outdoor use
I give you two values from one RJ11 port, temperature and relative humidity. I am a slim rod, 78 × 10 × 6 mm.
1U rack temperature and humidity probe with two RJ11 ports for daisy-chaining
I am the rack version with both values. Mount me as a 1U device at the front or back and chain the next sensor through my second port.
Outdoor temperature and humidity probe on the 1-Wire bus, IP64, 3 m cable
I measure temperature and humidity outdoors. IP64 probe, 15 mm across and 112 mm long, on a 3 m cable.
Wall mount temperature and humidity sensor box with two RJ11 ports
I am the wall box for offices and storage rooms. Two RJ11 ports let you daisy-chain, and a 3 m cable comes with me.
Small 40 × 40 mm indoor temperature and humidity box with RJ11 (1WU) interface
I am the small 4 by 4 cm box. Stick me to a wall, ceiling or desk with tape and I report temperature to ±0.5 °C plus humidity.
Industrial Pt100 temperature probe, -50 to +200 °C, IP67, 8-point calibration
When you need industrial precision, I am the Pt100 probe. -50 to +200 °C, IP67, and I can be calibrated at 8 points.
Cryo Pt100 temperature probe, -200 to +160 °C, IP67, 8-point calibration
I am the cryo version. -200 to +160 °C with the same Pt100 precision and IP67 protection.
Pt100 probe on a 2 m silicon cable with a 1-Wire UNI converter, second probe input free
I combine a Pt100/A probe with the 2xPt100 converter on the cable, ±0.3 °C in the whole range. You can add a second Pt100 or Pt1000 probe to me.
Connects one or two Pt100 or Pt1000 probes to the 1-Wire UNI bus, 2, 3 or 4-wire
Bring your own Pt100 or Pt1000 probes and I put them on the 1-Wire UNI bus. I detect the probe type myself and cover -200 to +850 °C.
RS-485 temperature and humidity sensors with LCD display, T7410 also measures pressure
I talk RS-485 to a Poseidon unit over up to 1000 m and show my values on a display. Several of me can share one line.
02 · Water leak detection
Spot detectors and sensing cable units that catch the first drops of water under floors, around pipes and cooling units.
Water is the quiet enemy of a server room. Here are the spot detector and the sensing cable units that tell you about the first drops.
Spot water detector with four pins, 3 m cable straight into an RJ11 port, IP67
I am a spot detector. Four pins on my body sense water at one point and I report 0 or 1 over the 1-Wire UNI bus.
Connects one WLD sensing cable zone (up to 185 m) to a 1W-UNI port or any DI via relay
Give me a WLD sensing cable and I watch up to 185 m of it. I report flooded or disconnected over 1W-UNI, or switch my relay for any digital input.
Standalone two-zone water leak detector with audible alarm and relay, 2x AA batteries
I work on my own: two sensing cable zones up to 185 m each, a built-in audible alarm, LEDs and a relay for your alarm system. Two AA batteries or 5 to 30 V DC.
03 · Energy meters, current probes and power detectors
Clamp-on and shunt current probes, mains voltage sensors and DIN rail electricity meters with M-Bus or Modbus.
This is where you watch power. The current probes clamp on without cutting a wire, and the DIN rail meters report consumption over M-Bus or Modbus.
Split-core clamp for single-phase AC current up to 30 A, no need to cut the wire
Open my split core, slip it around one insulated wire, and I read AC current up to 30 A. My 1-Wire UNI side is isolated from the mains.
Shunt-based DC current probe, 0-100 A or 0-30 A versions, reports current direction
My shunt sits in the DC circuit and I report current with its sign, so you see charging and discharging. Choose the 100 A or the 30 A version.
DIN rail sensor that measures the actual mains voltage, 100 to 240 V AC, on the 1-Wire bus
I measure the real mains voltage, 100 to 240 V AC, and report it over 1-Wire UNI. I sit on a DIN rail, two modules wide.
Plug-in voltage presence detector with isolated relay output for any digital input
Plug me into a socket and I close a contact while mains voltage is present. Wire that contact to any digital input.
Mains voltage detector and switch between two IEC-320 connectors, 110 to 230 V AC
I sit between a C14 plug and a C13 socket. I report whether mains is present, and I can cut the output when you tell me to, for a remote server restart.
Single phase DIN rail energy meter, 5(45) A, M-Bus (PRO1-Mb) or Modbus RTU (PRO1-Mod)
I am the compact single phase meter, one DIN module wide, 5(45) A, accuracy class B. I report over M-Bus or Modbus RTU depending on the version.
Single phase DIN rail energy meter, 5(100) A, M-Bus (PRO2-Mb) or Modbus RTU (PRO2-Mod)
I am the bigger single phase meter, up to 100 A direct. I have forward and reverse S0 pulse outputs plus M-Bus or Modbus RTU.
Three phase DIN rail energy meter, 5(100) A direct or 1,5(6) A CT, M-Bus or Modbus RTU
I meter three phases: direct connection up to 100 A, or the CT version through current transformers with a settable ratio. M-Bus or Modbus RTU.
Poly-phase 4-tariff electricity meter, direct to 63 A or via CT, RS 485 or M-Bus module
I count consumption and supply in up to four tariffs, directly up to 63 A or through current transformers. Add an RS 485 or M-Bus module and I join the bus.
Two-channel pulse logger that puts S0 meter pulses on M-Bus, battery backed, 1 DIN module
I collect pulses from two meters, gas, water or electricity, and hand the counts to M-Bus. A lithium battery keeps me going if the bus fails.
04 · Smoke, gas, motion and vibration detectors
Third-party detectors with relay or contact outputs: smoke, combustible gas, PIR motion and vibration.
Each of these ends in a contact, so a digital input can carry the alarm for smoke, gas, movement or a shock to a window.
4-wire 12 V smoke detector with Form A auto-reset relay, up to 30 units per loop
I am the 4-wire smoke detector head on a twist-lock base: 12 V DC, a Form A relay contact, and up to 30 of me on one loop.
Combustible gas detector (methane, propane, butane, hydrogen), two alarm levels, relay
I sniff for natural gas, propane, butane and hydrogen at two concentration levels. I beep at 94 dB and close a relay you can use for a gas valve or an alarm input.
Wired PIR motion detector for a secured area, component of an intrusion alarm system
I am a wired PIR detector. I sense people moving in a secured area and signal it over my cable to the control panel.
Shock and vibration detector for windows, doors and fixtures, with sensitivity trimmer
Fix me to a window or door frame. A hard knock closes my alarm contact for 2 seconds, and a trimmer sets how sensitive I am.
05 · Air quality (CO2, VOC)
Indoor sensors that add CO2 or VOC readings to temperature and humidity, for offices, schools and public rooms.
Here I check the air you breathe. These boxes report CO2 or VOC together with temperature and humidity, so a stuffy room shows up before anyone complains.
Combined temperature, humidity and CO2 sensor in one box, RJ11 1-Wire UNI interface
I report three values on one RJ11 port: temperature, humidity and CO2 from 300 to 40 000 ppm. Give me 7 days to calibrate in the room.
Four quantities in a 4 × 4 cm box: temperature, humidity, air pressure and VOC air quality
I am four sensors in one small box: temperature, humidity, atmospheric pressure and VOC air quality in ppb. The bus sees me as four independent sensors.
Wall CO2, temperature and humidity sensor on RS485 Modbus RTU, LED or touch display
I measure CO2, temperature and humidity on the wall and answer Modbus RTU over RS485. Choose me plain, with LEDs, or with a 2.3 inch touch screen.
06 · Inputs, outputs and converters
Modules that bring dry contacts, relays, 0-20 mA, 4-20 mA and 0-60 V signals onto the 1-Wire UNI bus.
Need to connect something that is not an HW group sensor? These modules turn contacts, relays, current loops and DC voltages into 1-Wire UNI values.
Adds four dry contact digital inputs to the 1-Wire UNI bus of Ares and Poseidon units
I give you four dry contact inputs on the 1-Wire UNI bus, for pushbuttons, door contacts or a smoke detector relay. I occupy four sensor positions.
Four NO/NC relay outputs for Ares 12 and Ares 14, switched by an alarm event or by SMS
I add four relay outputs to an Ares 12 or Ares 14. Switch alarms, air conditioning or heating from an alarm event or an SMS.
Isolated 0-20 mA current loop input for source-type industrial probes, on 1-Wire UNI
Feed me a 0-20 mA source signal, from a current transformer or a pressure transducer, and I show it on the 1-Wire UNI bus, isolated.
Isolated 4-20 mA current loop input that also powers the external sink-type probe
I power your 4-20 mA sink probe from a 12-30 V DC supply and put its reading on the 1-Wire UNI bus. Tank levels and gas concentrations are typical jobs for me.
Isolated DC voltage sensor, 0 to 60 V, for -48 V telco batteries and 0-10 V transducers
I measure DC voltage up to 60 V, isolated, so I am at home on -48 V telco batteries, 12 V or 24 V car batteries and 0-10 V transducers.
Next step · the devices
The device reads the sensors, evaluates the values and sends the alert. These are the families on the HW group page.
Perseus units read sensors, detectors and third-party meters, evaluate the values locally with conditions, a calendar and Lua scripts, and sync everything to the Open API or a SensDesk Technology portal.
Poseidon2 units monitor sensors and digital I/O over LAN with secure M2M protocols (HTTPs, IPv6, SNMPv3) and work with over 50 SNMP and SCADA applications.
Damocles2 units are Ethernet I/O devices: dry contact inputs with S0 pulse counters for meters and detectors, relay or open collector outputs, and the same secure M2M protocols as Poseidon2.
STE2 units are LAN and WiFi thermometers for remote locations: a temperature sensor in the package, more RJ11 sensors daisy-chained, and email alerts straight from the device or through the portal.
Ares units monitor up to 14 sensor values and 2 detectors over the cellular network, for locations without LAN access, with battery backup and SMS, call and email alarms sent from the device itself.
NB devices are single-purpose, battery-powered units on the NB-IoT cellular network: stick them on the wall and the data goes straight to a SensDesk Technology portal, which is mandatory for them.
Good to know · HW group
HWg-cloud.com is the free portal from HW group for basic device management and email alerts; SensDesk.com is the paid service for professionals, from a single user with a few devices to projects with hundreds of devices, with a 30 days trial. SensDesk can also be licensed for your own servers (on premise), and third-party Portal providers run SensDesk Technology portals in local languages.
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