Installation manual

M1XRFTW Installation Manual Page 7
Operation
How does the Elk Two-Way technology differ from one-way wireless technology?
Elk's Two-Way technology is superior to traditional one-way wireless products in many ways.
1. Every signal sent by an Elk two-way sensor receives a positive acknowledgment from the transceiver. One-way systems have
the reputation of being "fire and pray".
2. Elk two-way sensors only send one signal at a time. One-way sensors have no choice but to blindly send multiple signals in
hopes that at least one will reach the receiver.
3. Long battery life and energy efficiency are inherent designs of the Elk two-way sensors. Elk two-way sensors self-adjust their
RF power, using only the minimum power needed to deliver a clear signal. One-way sensors consume FULL power on each
and every transmission.
4. Long range coverage is possible due to the 900 MHz frequency range and automatic frequency hopping design. One-way systems
operate at a specific, non-adjustable lower frequency.
5. A two-color LED indicator on the sensor provides operational feedback. A single Green blink means the transmission was sent
and positively acknowledged by the transceiver. A Red blink means the sensor was unable to receive an acknowledgment from
the M1XRFTW transceiver. One-way sensors provide no indication of signal verification.
6. Installation confidence. All Elk 6000 series sensors artificially limit their RF power to 50% of normal for the first 10 minutes after
battery installation. This "stress test" helps to assure that a sensor's mounting location and range is suitable for long term
reliability. The principle is that a sensor which is able to reliably communicate using half the normal power will have a high degree
of reliability with full 100% power. Other sensor brands do not provide this confidence feature. To take full advantage of this feature
we recommended that every sensor be temporarily installed at its intended location and tripped multiple times while observing
the two-color LED indicator. A near instant GREEN blink response from the sensor is Ideal. If it requires more than a second
or so to get a GREEN blink then we suggest reorienting the sensor to another spot on the mounting surface, or rotating its mounting
by 90 degrees. Be aware that excessive distance (range) can also cause a delay of the GREEN blink. In extreme situations it
may be necessary to relocate the transceiver to closer spot or to add an additional remote transceiver to cover distant sensors.
Programming tools needed for the M1XRFTW Transceiver and Sensors.
There are no special tools required for Elk's two-way wireless product line. The Transceiver itself and the sensors may be
programmed using either the M1 Keypad Installer Programming or the ElkRP Remote Programming software. The following pages
document the options and steps for programming from the keypad.
Installation and Replacement of Batteries in Wireless Sensors::
A Low Battery trouble will be sent to the Control whenever a sensor determines that its battery needs to be replaced. This will
generally occur well in advance of the battery becoming completely dead. However, it is up to the customer to ensure that the
Low Battery trouble is responded to and rectified in a timely manner so that the system can continue to operate.
When replacing a Low Battery:
1. Remove the old battery and WAIT AT LEAST 20 SECONDS before installing the new battery. This is important as it allows
the sensor circuitry to completely shutdown and erase the low battery memory.
2. After 20 seconds, install the new battery, then trip the sensor a couple of times so that an "all good" signal will be sent to
the control to clear the low battery trouble.