Security System Cancellation Letter Template

Plug-and-play cancellation letter that includes the right legal phrases, the FTC cooling-off citation, and a written-record cover sheet.

A Plug-and-Play Letter from SecurityCompass HQ

Version: 2026.05 Free, no paywall. Republish with attribution.

How to use this template

1. Read the "Before you send" checklist below.
2. Pick the variant that matches your situation (cooling-off, ETF dispute, end-of-contract non-renewal, or equipment-only return).
3. Fill in the blanks.
4. Send via the cancellation method specified in YOUR contract (most brands require certified mail). Keep a copy for your records.

A free ETF calculator is at https://tools.securitycompasshq.com/etf-calculator if you need the dollar amounts before sending.

Before you send

• [ ] Confirm the cancellation method in your contract. Phone-only, certified mail, in-app, or email — each brand specifies one (or more) accepted methods. Sending via the wrong method is treated as no notice.
• [ ] Confirm the notice window. 30 days, 60 days, 90 days. Send early.
• [ ] Have your account number, contract number, and contract start date in front of you.
• [ ] Send via certified mail with return receipt (even if email is also accepted). The receipt is your proof.
• [ ] Save a digital scan of the signed letter and the certified-mail receipt.
• [ ] Plan your equipment return logistics. Some brands require you to ship the equipment back; not doing so triggers a non-return fee.

VARIANT A — FTC Cooling-Off (within 3 business days of in-home sale)

Use this if you signed at home, at the door, or anywhere other than the seller's permanent place of business, AND the contract is for $25 or more, AND it has been 3 business days or fewer since you signed. Federal law (16 CFR Part 429) gives you a right to rescind.

[Your full name]
[Your full address]
[Your phone]
[Your email]

[Date]

[Brand name]
ATTN: Cancellation Department
[Brand cancellation address from your contract]

VIA CERTIFIED MAIL — RETURN RECEIPT REQUESTED

RE: Notice of Cancellation under FTC Cooling-Off Rule (16 CFR Part 429)
    Account #: [your account number]
    Contract #: [your contract number]
    Contract date: [signing date]

To Whom It May Concern:

I am exercising my right to cancel the above contract under the Federal
Trade Commission's Cooling-Off Rule (16 CFR Part 429), which applies to
sales of consumer goods or services of $25 or more made at the buyer's
residence or away from the seller's permanent place of business.
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