Bosch RF3405E Wireless Inertia Transmitter with Reed Switch
The Bosch RF3405E puts three kinds of sensing in one wireless housing: an inertia sensor that feels an attack on the frame, a magnetic reed switch that sees the door or window open, and a supervised input for an external dry contact, reporting on 433.42 MHz. The transmitter is set to monitor either the inertia sensor or the external loop, not both at once.
What you get
- 1 × RF3405E wireless inertia transmitter
You'll also need
- A compatible wireless receiver on the alarm panel, such as the RFRC-STR2, which lists this transmitter among its DSRF devices
- The magnet assembly that pairs with it, fitted to the moving part of the door or window
- A 3 VDC lithium battery when the time comes to replace it: a Duracell DL123A, Energizer EL123AP or Panasonic CR123A
- End-of-line resistors if the external input will supervise a dry contact device
Delivery, warranty & returns · ships same day before 2pm
- Same-day dispatch on in-stock orders placed before 2pm, Sydney time.
- 1–4 business days Australia-wide. Free standard shipping over $300, flat $25 under.
- 3-year warranty on cameras and recorders, back-to-base, plus your Australian Consumer Law rights.
- 30-day returns on unopened items. Faulty on arrival? We cover return shipping.
- Genuine Australian stock. Never grey imports. Prices include GST.
All cameras, NVRs and DVRs come with a 3-year back-to-base manufacturer warranty covering defects in materials and workmanship, in addition to your rights under Australian Consumer Law. Hard drives and accessories are covered as set out in our Warranty Policy.
Standard shipping is free on all orders over $300 AUD, Australia-wide. Orders under $300 ship at a flat rate of $25, calculated at checkout. Tracking is included on every order.
You have 30 days from the day you receive your order to request a change-of-mind return. Items must be unopened, factory-sealed and in resalable condition. A 15% restocking fee applies and return postage is at your cost. Faulty or incorrectly supplied items are different: we cover the return shipping and refund or replace at no charge. Read the full Return & Refund Policy.
Order before 2pm (Sydney time) on a business day and in-stock items are dispatched the same day. Most orders arrive within 1–4 business days Australia-wide; remote and regional areas can take a little longer. You'll receive a tracking number by email as soon as your order leaves the warehouse.
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§ 01Overview
What the RF3405E is
The Bosch RF3405E is the transmitter for an opening that has to be watched two ways: not just opened, but attacked. The inertia sensor reacts to the shock of a frame being levered or a glass pane being struck, the reed switch reports the opening itself, and a third input takes a dry contact from something else entirely, so one wireless point can be set up for the job the opening actually needs.
Sensitivity is set for the opening rather than left to chance. Minor attack can be programmed to react after four or eight repetitive pulses, and gross attack has four sensitivity settings of its own; with gross attack enabled the inertia sensor reacts only to major attack movement, which suits a roller shutter that rattles in the wind. Separate test modes verify the gross and minor settings once the unit is mounted, so the setting is proven on the actual door instead of guessed.
It is flexible about what it watches, within one limit. The transmitter is set to monitor the inertia sensor or the external loop: it cannot monitor both at the same time. The reed switch can be enabled or disabled separately, and the internal reed switches will accept a dual end-of-line resistor supervised dry contact input from an external device.
Radio is 433.42 MHz at less than 10 mW, with an open-air range of about 300 m, though Bosch asks that the transmitter stay within 100 m of the receiver it is assigned to. Supervision is a signal every 13 minutes when nothing else has happened, cover and wall tampers both report, and every transmission carries the battery status. One 3 VDC lithium battery runs it for at least three years, or two years if the inertia sensor is in use.
Mounting is conventional: the transmitter on the door or window frame, the magnet assembly on the moving part. Two cautions apply. A metal surface may reduce the radio range, and iron or steel may affect the internal magnetic contact. The transmitter measures 2.7 cm x 2.4 cm x 16.9cm with a 1.9 cm x 1.3 cm x 16.9 cm magnet, and it works from -20C to +60C at up to 95% non-condensing humidity.
§ 02Engineering
RF3405E specifications
Attack settings — minor attack after four or eight repetitive pulses, gross attack with four sensitivity settings — a rattling roller shutter and a quiet office door get different settings
Commissioning — separate test modes for the gross and minor attack settings after mounting — the setting is proven on the door, not assumed
Configuration — the inertia sensor or the external loop, never both, with the reed switch enabled or disabled and a dual end-of-line supervised dry contact input — one transmitter, set for the opening in front of it
Radio — 433.42 MHz at less than 10 mW, about 300 m in open air, keep within 100 m of the receiver — a realistic planning figure, not a best case
Supervision — a signal every 13 minutes when nothing else happens, cover and wall tamper, battery status in every transmission — the panel knows it is still there
Battery — one 3 VDC lithium cell, at least three years, or two years with the inertia sensor in use — a change every few years
Mounting — transmitter on the frame, magnet on the moving part, -20C to +60C at 0% to 95% non-condensing humidity — a conventional door or window fit
§ 03Full datasheet
Detailed specifications
Overview & Compatibility
| Feature | Detail |
|---|---|
| Product | RF3405E Wireless (RF) Inertia Transmitter |
| Description | The RF3405E is a wireless transmitter with an inertia sensor, reed switch, and supervised external contact input. It is used for monitoring doors, windows, or other dry contact devices. |
| Compatibility Information (datasheet) | Receiver RF3227E — Control Panels D7240, D7220, D6412, and D4412 |
| Compatible receivers (other datasheets) | RADION receiver ST (RFRC-STR) datasheet lists RF3405E under DSRF devices; the RFRC-STR-2 setup guide says it replaces the RF3212E receiver |
| Recommended Batteries | Duracell DL123A, Energizer EL123AP, Panasonic CR123A |
Detection & Coverage
| Feature | Detail |
|---|---|
| Sensors | Internal magnetic reed switch; Supervised external loop; inertia sensor with programmable sensitivity settings |
| Gross or Minor Attack Movement Settings | Program the minor attack settings to react after four or eight repetitive pulses. If gross attack is enabled, the inertia sensor only reacts to major attack movement. The gross attack movement has four sensitivity settings. |
| Configuration | You can set the transmitter to monitor the inertia sensor or external loop. Internal reed switches can also accept a dual EOL resistor supervised dry contact input from an external device. You can enable or disable the reed switch. |
| Test Mode | Once the detector is mounted, you can place it in test mode. Separate test modes verify the gross attack or minor attack movement settings. |
| Mounting | Mount the inertia transmitter on the door or window frame and mount the magnet assembly on the moving portion. |
| Metal surfaces | Mounting the inertia transmitter on metal surfaces might reduce its RF range. Mounting it on iron or steel surfaces might affect the operation of the internal magnetic contact. |
Wireless & Radio
| Feature | Detail |
|---|---|
| Frequency | 433.42 MHz |
| Maximum RF Power | Less than 10 mW |
| Range | The maximum range of the inertia transmitter, in open air, is approximately 300 m (984 ft). Keep this transmitter within 100 m (328 ft) of the receiver to which it is assigned. |
| Supervisory Interval | 13 min nominal — Supervision is provided by transmitting a signal to the receiver every 13 minutes if there is no other activity. |
| Tamper | A cover and wall tamper switch is provided. All transmissions from the RF3405E send battery status information. |
Power & Electrical
| Feature | Detail |
|---|---|
| Battery | One 3 VDC lithium battery |
| Battery Life | A minimum of 3 years under normal operating conditions with recommended battery types (2 years if using the inertia sensor). |
Physical & Environment
| Feature | Detail |
|---|---|
| Dimensions Transmitter | 2.7 cm x 2.4 cm x 16.9cm (1.1 in. x 0.9 in. x 6.7 in.) |
| Dimensions Magnet | 1.9 cm x 1.3 cm x 16.9 cm (0.75 in. x 0.5 in. x 2.4 in.) |
| Relative Humidity | 0% to 95% non-condensing |
| Temperature (operating) | -20C to +60C (-4°F to +151°F) |
Compliance & Warranty
| Feature | Detail |
|---|---|
| Europe | CE 1999/5/EC, EN60950: 2000, EN61000-4-2: 1998, EN61000-4-3: 2000, EN300220-1: 1997 |
| Overview & Compatibility — Product | RF3405E Wireless (RF) Inertia Transmitter |
|---|---|
| Overview & Compatibility — Description | The RF3405E is a wireless transmitter with an inertia sensor, reed switch, and supervised external contact input. It is used for monitoring doors, windows, or other dry contact devices. |
| Overview & Compatibility — Compatibility Information (datasheet) | Receiver RF3227E — Control Panels D7240, D7220, D6412, and D4412 |
| Overview & Compatibility — Compatible receivers (other datasheets) | RADION receiver ST (RFRC-STR) datasheet lists RF3405E under DSRF devices; the RFRC-STR-2 setup guide says it replaces the RF3212E receiver |
| Overview & Compatibility — Recommended Batteries | Duracell DL123A, Energizer EL123AP, Panasonic CR123A |
| Detection & Coverage — Sensors | Internal magnetic reed switch; Supervised external loop; inertia sensor with programmable sensitivity settings |
| Detection & Coverage — Gross or Minor Attack Movement Settings | Program the minor attack settings to react after four or eight repetitive pulses. If gross attack is enabled, the inertia sensor only reacts to major attack movement. The gross attack movement has four sensitivity settings. |
| Detection & Coverage — Configuration | You can set the transmitter to monitor the inertia sensor or external loop. Internal reed switches can also accept a dual EOL resistor supervised dry contact input from an external device. You can enable or disable the reed switch. |
| Detection & Coverage — Test Mode | Once the detector is mounted, you can place it in test mode. Separate test modes verify the gross attack or minor attack movement settings. |
| Detection & Coverage — Mounting | Mount the inertia transmitter on the door or window frame and mount the magnet assembly on the moving portion. |
| Detection & Coverage — Metal surfaces | Mounting the inertia transmitter on metal surfaces might reduce its RF range. Mounting it on iron or steel surfaces might affect the operation of the internal magnetic contact. |
| Wireless & Radio — Frequency | 433.42 MHz |
| Wireless & Radio — Maximum RF Power | Less than 10 mW |
| Wireless & Radio — Range | The maximum range of the inertia transmitter, in open air, is approximately 300 m (984 ft). Keep this transmitter within 100 m (328 ft) of the receiver to which it is assigned. |
| Wireless & Radio — Supervisory Interval | 13 min nominal — Supervision is provided by transmitting a signal to the receiver every 13 minutes if there is no other activity. |
| Wireless & Radio — Tamper | A cover and wall tamper switch is provided. All transmissions from the RF3405E send battery status information. |
| Power & Electrical — Battery | One 3 VDC lithium battery |
| Power & Electrical — Battery Life | A minimum of 3 years under normal operating conditions with recommended battery types (2 years if using the inertia sensor). |
| Physical & Environment — Dimensions Transmitter | 2.7 cm x 2.4 cm x 16.9cm (1.1 in. x 0.9 in. x 6.7 in.) |
| Physical & Environment — Dimensions Magnet | 1.9 cm x 1.3 cm x 16.9 cm (0.75 in. x 0.5 in. x 2.4 in.) |
| Physical & Environment — Relative Humidity | 0% to 95% non-condensing |
| Physical & Environment — Temperature (operating) | -20C to +60C (-4°F to +151°F) |
| Compliance & Warranty — Europe | CE 1999/5/EC, EN60950: 2000, EN61000-4-2: 1998, EN61000-4-3: 2000, EN300220-1: 1997 |
§ 08Questions
Frequently asked about the RF3405E
Q.01
Bosch RF3405E: what does it detect?
Q.02
What receiver does it need?
Q.03
How do I stop a windy roller shutter setting it off?
Q.04
How do I check the sensitivity is right?
Q.05
How far can it be from the receiver?
Q.06
Can I turn the reed switch off?
Q.07
How long does the battery last?
Q.08
Can it go on a steel door or roller shutter?
Q.09
Where does the magnet go?
Buying from Smarket
Is your Hikvision, Dahua, HiLook and TP-Link VIGI stock genuine Australian stock?
Yes, 100%. Every Hikvision, Dahua, HiLook and TP-Link VIGI product we sell is a genuine Australian-market model sourced through Australian supply chains — never grey imports. That means factory-sealed units, Australian-region firmware that works with the official apps out of the box, and a full 3-year local warranty.
How long does delivery take?
Order before 2pm (Sydney time) on a business day and in-stock items are dispatched the same day. Most orders arrive within 1–4 business days Australia-wide; remote and regional areas can take a little longer. You'll receive a tracking number by email as soon as your order leaves the warehouse.
How much is shipping?
Standard shipping is free on all orders over $300 AUD, Australia-wide. Orders under $300 ship at a flat rate of $25, calculated at checkout. Tracking is included on every order.
What warranty do you offer?
All cameras, NVRs and DVRs come with a 3-year back-to-base manufacturer warranty covering defects in materials and workmanship, in addition to your rights under Australian Consumer Law. Hard drives and accessories are covered as set out in our Warranty Policy.
What is your return policy?
You have 30 days from the day you receive your order to request a change-of-mind return. Items must be unopened, factory-sealed and in resalable condition. A 15% restocking fee applies and return postage is at your cost. Faulty or incorrectly supplied items are different: we cover the return shipping and refund or replace at no charge. Read the full Return & Refund Policy.
Do you offer installation?
We can connect you with licensed installers in Sydney and Melbourne. Installation typically starts from around $200 per camera depending on cable runs and site conditions. Email sales@smarket.com.au with your address and camera count for a quote.